Merge m-i to m-c, a=merge

2024-10-09 19:35:51 +00:00 · 2016-01-30 09:28:35 -08:00 · 2016-01-30 09:28:35 -08:00 · 985ff5df04
commit 985ff5df04
parent cda0974c56 689acb778d
95 changed files with 1469 additions and 776 deletions
--- a/devtools/server/actors/settings.js
+++ b/devtools/server/actors/settings.js
@ -26,7 +26,7 @@ function getDefaultSettings() {
  let chan = NetUtil.newChannel({
    uri: NetUtil.newURI(settingsFile),
    loadUsingSystemPrincipal: true});
-  let stream = chan.open();
+  let stream = chan.open2();
  // Obtain a converter to read from a UTF-8 encoded input stream.
  let converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"]
                  .createInstance(Ci.nsIScriptableUnicodeConverter);
--- a/dom/base/PostMessageEvent.cpp
+++ b/dom/base/PostMessageEvent.cpp
@ -28,6 +28,7 @@ PostMessageEvent::PostMessageEvent(nsGlobalWindow* aSource,
                                   const nsAString& aCallerOrigin,
                                   nsGlobalWindow* aTargetWindow,
                                   nsIPrincipal* aProvidedPrincipal,
+                                   nsIDocument* aSourceDocument,
                                   bool aTrustedCaller)
 : StructuredCloneHolder(CloningSupported, TransferringSupported,
                        SameProcessSameThread),
@ -35,6 +36,7 @@ PostMessageEvent::PostMessageEvent(nsGlobalWindow* aSource,
  mCallerOrigin(aCallerOrigin),
  mTargetWindow(aTargetWindow),
  mProvidedPrincipal(aProvidedPrincipal),
+  mSourceDocument(aSourceDocument),
  mTrustedCaller(aTrustedCaller)
 {
  MOZ_COUNT_CTOR(PostMessageEvent);
@ -57,6 +59,12 @@ PostMessageEvent::Run()
  jsapi.Init();
  JSContext* cx = jsapi.cx();

+  // The document is just used for the principal mismatch error message below.
+  // Use a stack variable so mSourceDocument is not held onto after this method
+  // finishes, regardless of the method outcome.
+  nsCOMPtr<nsIDocument> sourceDocument;
+  sourceDocument.swap(mSourceDocument);
+
  // If we bailed before this point we're going to leak mMessage, but
  // that's probably better than crashing.

@ -92,6 +100,20 @@ PostMessageEvent::Run()
    //       now.  Long-term, we want HTML5 to address this so that we can
    //       be compliant while being safer.
    if (!targetPrin->Equals(mProvidedPrincipal)) {
+      nsAutoString providedOrigin, targetOrigin;
+      nsresult rv = nsContentUtils::GetUTFOrigin(targetPrin, targetOrigin);
+      NS_ENSURE_SUCCESS(rv, rv);
+      rv = nsContentUtils::GetUTFOrigin(mProvidedPrincipal, providedOrigin);
+      NS_ENSURE_SUCCESS(rv, rv);
+
+      const char16_t* params[] = { providedOrigin.get(), targetOrigin.get() };
+
+      nsContentUtils::ReportToConsole(nsIScriptError::errorFlag,
+        NS_LITERAL_CSTRING("DOM Window"), sourceDocument,
+        nsContentUtils::eDOM_PROPERTIES,
+        "TargetPrincipalDoesNotMatch",
+        params, ArrayLength(params));
+
      return NS_OK;
    }
  }
--- a/dom/base/PostMessageEvent.h
+++ b/dom/base/PostMessageEvent.h
@ -34,6 +34,7 @@ public:
                   const nsAString& aCallerOrigin,
                   nsGlobalWindow* aTargetWindow,
                   nsIPrincipal* aProvidedPrincipal,
+                   nsIDocument* aSourceDocument,
                   bool aTrustedCaller);

 private:
@ -43,6 +44,7 @@ private:
  nsString mCallerOrigin;
  RefPtr<nsGlobalWindow> mTargetWindow;
  nsCOMPtr<nsIPrincipal> mProvidedPrincipal;
+  nsCOMPtr<nsIDocument> mSourceDocument;
  bool mTrustedCaller;
 };

--- a/dom/base/nsDOMWindowUtils.cpp
+++ b/dom/base/nsDOMWindowUtils.cpp
@ -106,6 +106,7 @@
 #include "HTMLImageElement.h"
 #include "mozilla/css/ImageLoader.h"
 #include "mozilla/layers/APZCTreeManager.h" // for layers::ZoomToRectBehavior
+#include "mozilla/dom/Promise.h"

 #ifdef XP_WIN
 #undef GetClassName
@ -811,7 +812,7 @@ nsDOMWindowUtils::SendWheelEvent(float aX,

  wheelEvent.refPoint = nsContentUtils::ToWidgetPoint(CSSPoint(aX, aY), offset, presContext);

-  widget->DispatchAPZAwareEvent(&wheelEvent);
+  widget->DispatchInputEvent(&wheelEvent);

  if (widget->AsyncPanZoomEnabled()) {
    // Computing overflow deltas is not compatible with APZ, so if APZ is
@ -2150,26 +2151,29 @@ nsDOMWindowUtils::GetLayerManagerRemote(bool* retval)
 }

 NS_IMETHODIMP
-nsDOMWindowUtils::GetSupportsHardwareH264Decoding(nsAString& aRetval)
+nsDOMWindowUtils::GetSupportsHardwareH264Decoding(JS::MutableHandle<JS::Value> aPromise)
 {
+  nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
+  NS_ENSURE_STATE(window);
+  nsCOMPtr<nsIGlobalObject> parentObject = do_QueryInterface(window);
+  NS_ENSURE_STATE(parentObject);
 #ifdef MOZ_FMP4
  nsCOMPtr<nsIWidget> widget = GetWidget();
-  if (!widget)
-    return NS_ERROR_FAILURE;
-
+  NS_ENSURE_STATE(widget);
  LayerManager *mgr = widget->GetLayerManager();
-  if (!mgr)
-    return NS_ERROR_FAILURE;
-
-  nsCString failureReason;
-  if (MP4Decoder::IsVideoAccelerated(mgr->GetCompositorBackendType(), failureReason)) {
-    aRetval.AssignLiteral("Yes");
-  } else {
-    aRetval.AssignLiteral("No; ");
-    AppendUTF8toUTF16(failureReason, aRetval);
-  }
+  NS_ENSURE_STATE(mgr);
+  RefPtr<Promise> promise =
+    MP4Decoder::IsVideoAccelerated(mgr->GetCompositorBackendType(), parentObject);
+  NS_ENSURE_STATE(promise);
+  aPromise.setObject(*promise->GetWrapper());
 #else
-  aRetval.AssignLiteral("No; Compiled without MP4 support.");
+  ErrorResult rv;
+  RefPtr<Promise> promise = Promise::Create(parentObject, rv);
+  if (rv.Failed()) {
+    return rv.StealNSResult();
+  }
+  promise.MaybeResolve(NS_LITERAL_STRING("No; Compiled without MP4 support."));
+  aPromise.setObject(*promise->GetWrapper());
 #endif
  return NS_OK;
 }
--- a/dom/base/nsGlobalWindow.cpp
+++ b/dom/base/nsGlobalWindow.cpp
@ -7969,6 +7969,9 @@ nsGlobalWindow::PostMessageMozOuter(JSContext* aCx, JS::Handle<JS::Value> aMessa
                         origin,
                         this,
                         providedPrincipal,
+                         callerInnerWin
+                         ? callerInnerWin->GetDoc()
+                         : nullptr,
                         nsContentUtils::IsCallerChrome());

  JS::Rooted<JS::Value> message(aCx, aMessage);
--- a/dom/base/test/unit/head_utilities.js
+++ b/dom/base/test/unit/head_utilities.js
@ -4,7 +4,7 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 Components.utils.import("resource://testing-common/httpd.js");
-Components.utils.import("resource://gre/modules/Services.jsm");
+Components.utils.import("resource://gre/modules/NetUtil.jsm");

 const nsIDocumentEncoder = Components.interfaces.nsIDocumentEncoder;
 const replacementChar = Components.interfaces.nsIConverterInputStream.DEFAULT_REPLACEMENT_CHARACTER;
@ -17,23 +17,21 @@ function loadContentFile(aFile, aCharset) {
    var file = do_get_file(aFile);
    var ios = Components.classes['@mozilla.org/network/io-service;1']
            .getService(Components.interfaces.nsIIOService);
-    var chann = ios.newChannelFromURI2(ios.newFileURI(file),
-                                       null,      // aLoadingNode
-                                       Services.scriptSecurityManager.getSystemPrincipal(),
-                                       null,      // aTriggeringPrincipal
-                                       Components.interfaces.nsILoadInfo.SEC_NORMAL,
-                                       Components.interfaces.nsIContentPolicy.TYPE_OTHER);
+    var chann = NetUtil.newChannel({
+      uri: ios.newFileURI(file),
+      loadUsingSystemPrincipal: true
+    });
    chann.contentCharset = aCharset;

    /*var inputStream = Components.classes["@mozilla.org/scriptableinputstream;1"]
                        .createInstance(Components.interfaces.nsIScriptableInputStream);
-    inputStream.init(chann.open());
+    inputStream.init(chann.open2());
    return inputStream.read(file.fileSize);
    */

    var inputStream = Components.classes["@mozilla.org/intl/converter-input-stream;1"]
                       .createInstance(Components.interfaces.nsIConverterInputStream);
-    inputStream.init(chann.open(), aCharset, 1024, replacementChar);
+    inputStream.init(chann.open2(), aCharset, 1024, replacementChar);
    var str = {}, content = '';
    while (inputStream.readString(4096, str) != 0) {
        content += str.value;
--- a/dom/bindings/Codegen.py
+++ b/dom/bindings/Codegen.py
@ -1036,10 +1036,7 @@ class CGHeaders(CGWrapper):
                headerSet.add("mozilla/dom/Nullable.h")
            unrolled = t.unroll()
            if unrolled.isUnion():
-                if len(config.filenamesPerUnion[unrolled.name]) > 1:
-                    headerSet.add("mozilla/dom/UnionTypes.h")
-                else:
-                    headerSet.add(self.getDeclarationFilename(unrolled))
+                headerSet.add(self.getUnionDeclarationFilename(config, unrolled))
                bindingHeaders.add("mozilla/dom/UnionConversions.h")
            elif unrolled.isDate():
                if dictionary or jsImplementedDescriptors:
@ -1195,6 +1192,20 @@ class CGHeaders(CGWrapper):
        basename = os.path.basename(decl.filename())
        return basename.replace('.webidl', 'Binding.h')

+    @staticmethod
+    def getUnionDeclarationFilename(config, unionType):
+        assert unionType.isUnion()
+        assert unionType.unroll() == unionType
+        # If a union is "defined" in multiple files, it goes in UnionTypes.h.
+        if len(config.filenamesPerUnion[unionType.name]) > 1:
+            return "mozilla/dom/UnionTypes.h"
+        # If a union is defined by a built-in typedef, it also goes in
+        # UnionTypes.h.
+        assert len(config.filenamesPerUnion[unionType.name]) == 1
+        if "<unknown>" in config.filenamesPerUnion[unionType.name]:
+            return "mozilla/dom/UnionTypes.h"
+        return CGHeaders.getDeclarationFilename(unionType)
+

 def SortedDictValues(d):
    """
@ -1290,10 +1301,7 @@ def UnionTypes(unionTypes, config):
                    # And add headers for the type we're parametrized over
                    addHeadersForType(f.inner)

-            if len(config.filenamesPerUnion[t.name]) > 1:
-                implheaders.add("mozilla/dom/UnionTypes.h")
-            else:
-                implheaders.add(CGHeaders.getDeclarationFilename(t))
+            implheaders.add(CGHeaders.getUnionDeclarationFilename(config, t))
            for f in t.flatMemberTypes:
                assert not f.nullable()
                addHeadersForType(f)
@ -1356,8 +1364,9 @@ def UnionConversions(unionTypes, config):
                    # And the internal type of the MozMap
                    addHeadersForType(f.inner, providers)

-            if len(config.filenamesPerUnion[t.name]) == 1:
-                headers.add(CGHeaders.getDeclarationFilename(t))
+            # We plan to include UnionTypes.h no matter what, so it's
+            # OK if we throw it into the set here.
+            headers.add(CGHeaders.getUnionDeclarationFilename(config, t))

            for f in t.flatMemberTypes:
                addHeadersForType(f, providers)
--- a/dom/bindings/Configuration.py
+++ b/dom/bindings/Configuration.py
@ -150,7 +150,15 @@ class Configuration:
            if t.isUnion():
                filenamesForUnion = self.filenamesPerUnion[t.name]
                if t.filename() not in filenamesForUnion:
-                    if len(filenamesForUnion) == 0:
+                    # We have a to be a bit careful: some of our built-in
+                    # typedefs are for unions, and those unions end up with
+                    # "<unknown>" as the filename.  If that happens, we don't
+                    # want to try associating this union with one particular
+                    # filename, since there isn't one to associate it with,
+                    # really.
+                    if t.filename() == "<unknown>":
+                        uniqueFilenameForUnion = None
+                    elif len(filenamesForUnion) == 0:
                        # This is the first file that we found a union with this
                        # name in, record the union as part of the file.
                        uniqueFilenameForUnion = t.filename()
--- a/dom/bindings/Exceptions.cpp
+++ b/dom/bindings/Exceptions.cpp
@ -159,6 +159,7 @@ CreateException(JSContext* aCx, nsresult aRv, const nsACString& aMessage)
  case NS_ERROR_MODULE_DOM_FILEHANDLE:
  case NS_ERROR_MODULE_DOM_BLUETOOTH:
  case NS_ERROR_MODULE_DOM_ANIM:
+  case NS_ERROR_MODULE_DOM_PUSH:
    if (aMessage.IsEmpty()) {
      return DOMException::Create(aRv);
    }
--- a/dom/bluetooth/bluez/BluetoothDBusService.cpp
+++ b/dom/bluetooth/bluez/BluetoothDBusService.cpp
@ -862,12 +862,12 @@ CheckDBusReply(DBusMessage* aMsg, void* aServiceClass, bool aConnect)
  nsAutoString replyError;
  UnpackVoidMessage(aMsg, nullptr, v, replyError);

-  nsAutoPtr<BluetoothServiceClass> serviceClass(
-    static_cast<BluetoothServiceClass*>(aServiceClass));
+  BluetoothServiceClass serviceClass =
+    static_cast<BluetoothServiceClass>(NS_PTR_TO_INT32(aServiceClass));

  if (!replyError.IsEmpty()) {
    NS_DispatchToMainThread(
-      new ReplyErrorToProfileManager(*serviceClass, aConnect, replyError));
+      new ReplyErrorToProfileManager(serviceClass, aConnect, replyError));
  }
 }

@ -2592,7 +2592,7 @@ class SendAsyncDBusMessageTask : public Task
 {
 public:
  SendAsyncDBusMessageTask(DBusReplyCallback aCallback,
-                           BluetoothServiceClass* aServiceClass,
+                           BluetoothServiceClass aServiceClass,
                           const nsACString& aObjectPath,
                           const char* aInterface,
                           const nsACString& aMessage)
@ -2602,7 +2602,6 @@ public:
    , mInterface(aInterface)
    , mMessage(aMessage)
  {
-    MOZ_ASSERT(mServiceClass);
    MOZ_ASSERT(!mObjectPath.IsEmpty());
    MOZ_ASSERT(!mInterface.IsEmpty());
    MOZ_ASSERT(!mMessage.IsEmpty());
@ -2613,18 +2612,18 @@ public:
    MOZ_ASSERT(!NS_IsMainThread()); // I/O thread
    MOZ_ASSERT(sDBusConnection);

+    static_assert(sizeof(BluetoothServiceClass) <= sizeof(intptr_t),
+                  "BluetoothServiceClass cannot be passed via intptr_t");
    bool success = sDBusConnection->SendWithReply(
-      mCallback, static_cast<void*>(mServiceClass), -1,
+      mCallback, NS_INT32_TO_PTR(mServiceClass), -1,
      BLUEZ_DBUS_BASE_IFC, mObjectPath.get(), mInterface.get(),
      mMessage.get(), DBUS_TYPE_INVALID);
    NS_ENSURE_TRUE_VOID(success);
-
-    mServiceClass.forget();
  }

 private:
  DBusReplyCallback mCallback;
-  nsAutoPtr<BluetoothServiceClass> mServiceClass;
+  BluetoothServiceClass mServiceClass;
  const nsCString mObjectPath;
  const nsCString mInterface;
  const nsCString mMessage;
@ -2642,18 +2641,18 @@ BluetoothDBusService::SendAsyncDBusMessage(const nsAString& aObjectPath,
  MOZ_ASSERT(!aObjectPath.IsEmpty());
  MOZ_ASSERT(aInterface);

-  nsAutoPtr<BluetoothServiceClass> serviceClass(new BluetoothServiceClass());
+  BluetoothServiceClass serviceClass;
  if (!strcmp(aInterface, DBUS_SINK_IFACE)) {
-    *serviceClass = BluetoothServiceClass::A2DP;
+    serviceClass = BluetoothServiceClass::A2DP;
  } else if (!strcmp(aInterface, DBUS_INPUT_IFACE)) {
-    *serviceClass = BluetoothServiceClass::HID;
+    serviceClass = BluetoothServiceClass::HID;
  } else {
    MOZ_ASSERT(false);
    return NS_ERROR_FAILURE;
  }

  Task* task = new SendAsyncDBusMessageTask(aCallback,
-                                            serviceClass.forget(),
+                                            serviceClass,
                                            NS_ConvertUTF16toUTF8(aObjectPath),
                                            aInterface,
                                            NS_ConvertUTF16toUTF8(aMessage));
--- a/dom/contacts/fallback/ContactDB.jsm
+++ b/dom/contacts/fallback/ContactDB.jsm
@ -128,7 +128,7 @@ ContactDB.prototype = {
        uri: NetUtil.newURI(contactsFile),
        loadUsingSystemPrincipal: true});

-      let stream = chan.open();
+      let stream = chan.open2();
      // Obtain a converter to read from a UTF-8 encoded input stream.
      let converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"]
                      .createInstance(Ci.nsIScriptableUnicodeConverter);
--- a/dom/interfaces/base/nsIDOMWindowUtils.idl
+++ b/dom/interfaces/base/nsIDOMWindowUtils.idl
@ -49,7 +49,7 @@ interface nsIJSRAIIHelper;
 interface nsIContentPermissionRequest;
 interface nsIObserver;

-[scriptable, uuid(ca6a458c-82e7-4979-886e-6d214eac6f0b)]
+[scriptable, uuid(46b44e33-13c2-4eb3-bf80-76a4e0857ccc)]
 interface nsIDOMWindowUtils : nsISupports {

  /**
@ -1334,11 +1334,12 @@ interface nsIDOMWindowUtils : nsISupports {
  readonly attribute boolean layerManagerRemote;

  /**
-   * True if we can initialize a hardware-backed h264 decoder for a simple
-   * test video, does not mean that all h264 video decoding will be done
+   * Returns a Promise that will be resolved with a string once the capabilities
+   * of the h264 decoder have been determined.
+   * Success does not mean that all h264 video decoding will be done
   * in hardware.
   */
-  readonly attribute AString supportsHardwareH264Decoding;
+  readonly attribute jsval supportsHardwareH264Decoding;

  /**
   * Record (and return) frame-intervals for frames which were presented
--- a/dom/ipc/TabChild.cpp
+++ b/dom/ipc/TabChild.cpp
@ -1795,35 +1795,37 @@ TabChild::RecvMouseEvent(const nsString& aType,
 }

 bool
-TabChild::RecvRealMouseMoveEvent(const WidgetMouseEvent& event,
+TabChild::RecvRealMouseMoveEvent(const WidgetMouseEvent& aEvent,
                                 const ScrollableLayerGuid& aGuid,
                                 const uint64_t& aInputBlockId)
 {
-  return RecvRealMouseButtonEvent(event, aGuid, aInputBlockId);
+  return RecvRealMouseButtonEvent(aEvent, aGuid, aInputBlockId);
 }

 bool
-TabChild::RecvSynthMouseMoveEvent(const WidgetMouseEvent& event,
+TabChild::RecvSynthMouseMoveEvent(const WidgetMouseEvent& aEvent,
                                  const ScrollableLayerGuid& aGuid,
                                  const uint64_t& aInputBlockId)
 {
-  return RecvRealMouseButtonEvent(event, aGuid, aInputBlockId);
+  return RecvRealMouseButtonEvent(aEvent, aGuid, aInputBlockId);
 }

 bool
-TabChild::RecvRealMouseButtonEvent(const WidgetMouseEvent& event,
+TabChild::RecvRealMouseButtonEvent(const WidgetMouseEvent& aEvent,
                                   const ScrollableLayerGuid& aGuid,
                                   const uint64_t& aInputBlockId)
 {
  nsEventStatus unused;
  InputAPZContext context(aGuid, aInputBlockId, unused);

-  WidgetMouseEvent localEvent(event);
+  WidgetMouseEvent localEvent(aEvent);
  localEvent.widget = mPuppetWidget;
+  APZCCallbackHelper::ApplyCallbackTransform(localEvent, aGuid,
+      mPuppetWidget->GetDefaultScale());
  APZCCallbackHelper::DispatchWidgetEvent(localEvent);

-  if (event.mFlags.mHandledByAPZ) {
-    mAPZEventState->ProcessMouseEvent(event, aGuid, aInputBlockId);
+  if (aEvent.mFlags.mHandledByAPZ) {
+    mAPZEventState->ProcessMouseEvent(aEvent, aGuid, aInputBlockId);
  }
  return true;
 }
@ -1839,16 +1841,18 @@ TabChild::RecvMouseWheelEvent(const WidgetWheelEvent& aEvent,
      mPuppetWidget, document, aEvent, aGuid, aInputBlockId);
  }

-  WidgetWheelEvent event(aEvent);
-  event.widget = mPuppetWidget;
-  APZCCallbackHelper::DispatchWidgetEvent(event);
+  WidgetWheelEvent localEvent(aEvent);
+  localEvent.widget = mPuppetWidget;
+  APZCCallbackHelper::ApplyCallbackTransform(localEvent, aGuid,
+      mPuppetWidget->GetDefaultScale());
+  APZCCallbackHelper::DispatchWidgetEvent(localEvent);

-  if (event.mCanTriggerSwipe) {
-    SendRespondStartSwipeEvent(aInputBlockId, event.TriggersSwipe());
+  if (localEvent.mCanTriggerSwipe) {
+    SendRespondStartSwipeEvent(aInputBlockId, localEvent.TriggersSwipe());
  }

  if (aEvent.mFlags.mHandledByAPZ) {
-    mAPZEventState->ProcessWheelEvent(event, aGuid, aInputBlockId);
+    mAPZEventState->ProcessWheelEvent(localEvent, aGuid, aInputBlockId);
  }
  return true;
 }
--- a/dom/ipc/TabParent.cpp
+++ b/dom/ipc/TabParent.cpp
@ -1450,7 +1450,7 @@ bool TabParent::RecvDispatchWheelEvent(const mozilla::WidgetWheelEvent& aEvent)
  localEvent.widget = widget;
  localEvent.refPoint -= GetChildProcessOffset();

-  widget->DispatchAPZAwareEvent(&localEvent);
+  widget->DispatchInputEvent(&localEvent);
  return true;
 }

--- a/dom/locales/en-US/chrome/dom/dom.properties
+++ b/dom/locales/en-US/chrome/dom/dom.properties
@ -190,3 +190,5 @@ InterceptionRejectedResponseWithURL=Failed to load '%1$S'. A ServiceWorker passe
 InterceptedNonResponseWithURL=Failed to load '%1$S'. A ServiceWorker passed a promise to FetchEvent.respondWith() that resolved with non-Response value '%2$S'.
 ExecCommandCutCopyDeniedNotInputDriven=document.execCommand('cut'/'copy') was denied because it was not called from inside a short running user-generated event handler.
 PatternAttributeCompileFailure=Unable to check <input pattern='%S'> because the pattern is not a valid regexp: %S
+# LOCALIZATION NOTE: Do not translate "postMessage" or DOMWindow. %S values are origins, like https://domain.com:port
+TargetPrincipalDoesNotMatch=Failed to execute 'postMessage' on 'DOMWindow': The target origin provided ('%S') does not match the recipient window's origin ('%S').
--- a/dom/media/AudioPacketizer.h
+++ b/dom/media/AudioPacketizer.h
@ -8,7 +8,7 @@

 #include <mozilla/PodOperations.h>
 #include <mozilla/Assertions.h>
-#include <nsAutoPtr.h>
+#include <mozilla/UniquePtr.h>
 #include <AudioSampleFormat.h>

 // Enable this to warn when `Output` has been called but not enough data was
@ -62,8 +62,8 @@ public:
      // the exact right size in order to not waste space.
      uint32_t newLength = AvailableSamples() + inputSamples;
      uint32_t toCopy = AvailableSamples();
-      nsAutoPtr<InputType> oldStorage = mStorage;
-      mStorage = new InputType[newLength];
+      UniquePtr<InputType[]> oldStorage = mozilla::Move(mStorage);
+      mStorage = mozilla::MakeUnique<InputType[]>(newLength);
      // Copy the old data at the beginning of the new storage.
      if (WriteIndex() >= ReadIndex()) {
        PodCopy(mStorage.get(),
@ -186,7 +186,7 @@ private:
  uint64_t mReadIndex;
  uint64_t mWriteIndex;
  // Storage for the samples
-  nsAutoPtr<InputType> mStorage;
+  mozilla::UniquePtr<InputType[]> mStorage;
  // Length of the buffer, in samples
  uint32_t mLength;
 };
--- a/dom/media/fmp4/MP4Decoder.cpp
+++ b/dom/media/fmp4/MP4Decoder.cpp
@ -182,23 +182,46 @@ MP4Decoder::IsEnabled()
  return Preferences::GetBool("media.mp4.enabled");
 }

+// sTestH264ExtraData represents the content of the avcC atom found in
+// an AVC1 h264 video. It contains the H264 SPS and PPS NAL.
+// the structure of the avcC atom is as follow:
+// write(0x1);  // version, always 1
+// write(sps[0].data[1]); // profile
+// write(sps[0].data[2]); // compatibility
+// write(sps[0].data[3]); // level
+// write(0xFC | 3); // reserved (6 bits), NULA length size - 1 (2 bits)
+// write(0xE0 | 1); // reserved (3 bits), num of SPS (5 bits)
+// write_word(sps[0].size); // 2 bytes for length of SPS
+// for(size_t i=0 ; i < sps[0].size ; ++i)
+//   write(sps[0].data[i]); // data of SPS
+// write(&b, pps.size());  // num of PPS
+// for(size_t i=0 ; i < pps.size() ; ++i) {
+//   write_word(pps[i].size);  // 2 bytes for length of PPS
+//   for(size_t j=0 ; j < pps[i].size ; ++j)
+//     write(pps[i].data[j]);  // data of PPS
+//   }
+// }
+// here we have a h264 Baseline, 640x360
+// We use a 640x360 extradata, as some video framework (Apple VT) will never
+// attempt to use hardware decoding for small videos.
 static const uint8_t sTestH264ExtraData[] = {
-  0x01, 0x64, 0x00, 0x0a, 0xff, 0xe1, 0x00, 0x17, 0x67, 0x64,
-  0x00, 0x0a, 0xac, 0xd9, 0x44, 0x26, 0x84, 0x00, 0x00, 0x03,
-  0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xc8, 0x3c, 0x48, 0x96,
-  0x58, 0x01, 0x00, 0x06, 0x68, 0xeb, 0xe3, 0xcb, 0x22, 0xc0
+  0x01, 0x42, 0xc0, 0x1e, 0xff, 0xe1, 0x00, 0x17, 0x67, 0x42,
+  0xc0, 0x1e, 0xbb, 0x40, 0x50, 0x17, 0xfc, 0xb8, 0x08, 0x80,
+  0x00, 0x00, 0x32, 0x00, 0x00, 0x0b, 0xb5, 0x07, 0x8b, 0x17,
+  0x50, 0x01, 0x00, 0x04, 0x68, 0xce, 0x32, 0xc8
 };

 static already_AddRefed<MediaDataDecoder>
 CreateTestH264Decoder(layers::LayersBackend aBackend,
-                      VideoInfo& aConfig)
+                      VideoInfo& aConfig,
+                      FlushableTaskQueue* aTaskQueue)
 {
  aConfig.mMimeType = "video/avc";
  aConfig.mId = 1;
  aConfig.mDuration = 40000;
  aConfig.mMediaTime = 0;
-  aConfig.mDisplay = nsIntSize(64, 64);
-  aConfig.mImage = nsIntRect(0, 0, 64, 64);
+  aConfig.mDisplay = nsIntSize(640, 360);
+  aConfig.mImage = nsIntRect(0, 0, 640, 360);
  aConfig.mExtraData = new MediaByteBuffer();
  aConfig.mExtraData->AppendElements(sTestH264ExtraData,
                                     MOZ_ARRAY_LENGTH(sTestH264ExtraData));
@ -207,23 +230,63 @@ CreateTestH264Decoder(layers::LayersBackend aBackend,

  RefPtr<PDMFactory> platform = new PDMFactory();
  RefPtr<MediaDataDecoder> decoder(
-    platform->CreateDecoder(aConfig, nullptr, nullptr, aBackend, nullptr));
+    platform->CreateDecoder(aConfig, aTaskQueue, nullptr, aBackend, nullptr));

  return decoder.forget();
 }

-/* static */ bool
-MP4Decoder::IsVideoAccelerated(layers::LayersBackend aBackend, nsACString& aFailureReason)
+/* static */ already_AddRefed<dom::Promise>
+MP4Decoder::IsVideoAccelerated(layers::LayersBackend aBackend, nsIGlobalObject* aParent)
 {
-  VideoInfo config;
-  RefPtr<MediaDataDecoder> decoder(CreateTestH264Decoder(aBackend, config));
-  if (!decoder) {
-    aFailureReason.AssignLiteral("Failed to create H264 decoder");
-    return false;
+  MOZ_ASSERT(NS_IsMainThread());
+
+  ErrorResult rv;
+  RefPtr<dom::Promise> promise;
+  promise = dom::Promise::Create(aParent, rv);
+  if (rv.Failed()) {
+    rv.SuppressException();
+    return nullptr;
  }
-  bool result = decoder->IsHardwareAccelerated(aFailureReason);
-  decoder->Shutdown();
-  return result;
+
+  RefPtr<FlushableTaskQueue> taskQueue =
+    new FlushableTaskQueue(GetMediaThreadPool(MediaThreadType::PLATFORM_DECODER));
+  VideoInfo config;
+  RefPtr<MediaDataDecoder> decoder(CreateTestH264Decoder(aBackend, config, taskQueue));
+  if (!decoder) {
+    taskQueue->BeginShutdown();
+    taskQueue->AwaitShutdownAndIdle();
+    promise->MaybeResolve(NS_LITERAL_STRING("No; Failed to create H264 decoder"));
+    return promise.forget();
+  }
+
+  decoder->Init()
+    ->Then(AbstractThread::MainThread(), __func__,
+           [promise, decoder, taskQueue] (TrackInfo::TrackType aTrack) {
+             nsCString failureReason;
+             bool ok = decoder->IsHardwareAccelerated(failureReason);
+             nsAutoString result;
+             if (ok) {
+               result.AssignLiteral("Yes");
+             } else {
+               result.AssignLiteral("No");
+               if (failureReason.Length()) {
+                 result.AppendLiteral("; ");
+                 AppendUTF8toUTF16(failureReason, result);
+               }
+             }
+             decoder->Shutdown();
+             taskQueue->BeginShutdown();
+             taskQueue->AwaitShutdownAndIdle();
+             promise->MaybeResolve(result);
+           },
+           [promise, decoder, taskQueue] (MediaDataDecoder::DecoderFailureReason aResult) {
+             decoder->Shutdown();
+             taskQueue->BeginShutdown();
+             taskQueue->AwaitShutdownAndIdle();
+             promise->MaybeResolve(NS_LITERAL_STRING("No; Failed to initialize H264 decoder"));
+           });
+
+  return promise.forget();
 }

 void
--- a/dom/media/fmp4/MP4Decoder.h
+++ b/dom/media/fmp4/MP4Decoder.h
@ -8,6 +8,7 @@

 #include "MediaDecoder.h"
 #include "MediaFormatReader.h"
+#include "mozilla/dom/Promise.h"

 namespace mozilla {

@ -38,7 +39,8 @@ public:
  // Returns true if the MP4 backend is preffed on.
  static bool IsEnabled();

-  static bool IsVideoAccelerated(layers::LayersBackend aBackend, nsACString& aReason);
+  static already_AddRefed<dom::Promise>
+  IsVideoAccelerated(layers::LayersBackend aBackend, nsIGlobalObject* aParent);

  void GetMozDebugReaderData(nsAString& aString) override;

--- a/dom/media/test/external/MANIFEST.in
+++ b/dom/media/test/external/MANIFEST.in
@ -1,4 +1,5 @@
 exclude MANIFEST.in
+include external-media-tests-requirements.txt
 recursive-include external_media_harness *
 recursive-include external_media_tests *

--- a/dom/media/webspeech/synth/pico/nsPicoService.cpp
+++ b/dom/media/webspeech/synth/pico/nsPicoService.cpp
@ -640,10 +640,11 @@ nsPicoService::LoadEngine(PicoVoice* aVoice)
  }

  if (!mPicoMemArea) {
-    mPicoMemArea = new uint8_t[PICO_MEM_SIZE];
+    mPicoMemArea = MakeUnique<uint8_t[]>(PICO_MEM_SIZE);
  }

-  status = sPicoApi.pico_initialize(mPicoMemArea, PICO_MEM_SIZE, &mPicoSystem);
+  status = sPicoApi.pico_initialize(mPicoMemArea.get(),
+                                    PICO_MEM_SIZE, &mPicoSystem);
  PICO_ENSURE_SUCCESS_VOID("pico_initialize", status);

  status = sPicoApi.pico_loadResource(mPicoSystem, aVoice->mTaFile.get(), &mTaResource);
--- a/dom/media/webspeech/synth/pico/nsPicoService.h
+++ b/dom/media/webspeech/synth/pico/nsPicoService.h
@ -8,7 +8,6 @@
 #define nsPicoService_h

 #include "mozilla/Mutex.h"
-#include "nsAutoPtr.h"
 #include "nsTArray.h"
 #include "nsIObserver.h"
 #include "nsIThread.h"
@ -16,6 +15,7 @@
 #include "nsRefPtrHashtable.h"
 #include "mozilla/StaticPtr.h"
 #include "mozilla/Monitor.h"
+#include "mozilla/UniquePtr.h"

 namespace mozilla {
 namespace dom {
@ -82,7 +82,7 @@ private:

  pico_Resource mTaResource;

-  nsAutoPtr<uint8_t> mPicoMemArea;
+  mozilla::UniquePtr<uint8_t[]> mPicoMemArea;

  static StaticRefPtr<nsPicoService> sSingleton;
 };
--- a/dom/notification/Notification.cpp
+++ b/dom/notification/Notification.cpp
@ -656,6 +656,8 @@ NotificationPermissionRequest::ResolvePromise()
    mCallback->Call(mPermission, error);
    rv = error.StealNSResult();
  }
+  Telemetry::Accumulate(
+    Telemetry::WEB_NOTIFICATION_REQUEST_PERMISSION_CALLBACK, !!mCallback);
  mPromise->MaybeResolve(mPermission);
  return rv;
 }
--- a/dom/push/PushManager.cpp
+++ b/dom/push/PushManager.cpp
@ -105,7 +105,7 @@ public:
    if (NS_SUCCEEDED(aStatus)) {
      mPromise->MaybeResolve(aSuccess);
    } else {
-      mPromise->MaybeReject(NS_ERROR_DOM_NETWORK_ERR);
+      mPromise->MaybeReject(NS_ERROR_DOM_PUSH_SERVICE_UNREACHABLE);
    }

    return NS_OK;
@ -403,7 +403,7 @@ public:
    if (NS_SUCCEEDED(mStatus)) {
      promise->MaybeResolve(mSuccess);
    } else {
-      promise->MaybeReject(NS_ERROR_DOM_NETWORK_ERR);
+      promise->MaybeReject(NS_ERROR_DOM_PUSH_SERVICE_UNREACHABLE);
    }

    mProxy->CleanUp(aCx);
@ -528,7 +528,7 @@ WorkerPushSubscription::Unsubscribe(ErrorResult &aRv)

  RefPtr<PromiseWorkerProxy> proxy = PromiseWorkerProxy::Create(worker, p);
  if (!proxy) {
-    p->MaybeReject(NS_ERROR_DOM_NETWORK_ERR);
+    p->MaybeReject(NS_ERROR_DOM_PUSH_SERVICE_UNREACHABLE);
    return p.forget();
  }

@ -598,6 +598,8 @@ public:
                                       mRawP256dhKey, mAuthSecret);
        promise->MaybeResolve(sub);
      }
+    } else if (NS_ERROR_GET_MODULE(mStatus) == NS_ERROR_MODULE_DOM_PUSH ) {
+      promise->MaybeReject(mStatus);
    } else {
      promise->MaybeReject(NS_ERROR_DOM_PUSH_ABORT_ERR);
    }
@ -776,7 +778,7 @@ public:
        callback->OnPushSubscriptionError(NS_OK);
        return NS_OK;
      }
-      callback->OnPushSubscriptionError(NS_ERROR_FAILURE);
+      callback->OnPushSubscriptionError(NS_ERROR_DOM_PUSH_DENIED_ERR);
      return NS_OK;
    }

--- a/dom/push/test/frame.html
+++ b/dom/push/test/frame.html
@ -4,20 +4,18 @@
  <meta http-equiv="Content-type" content="text/html;charset=UTF-8">
  <script>

-
-    function waitOnPushMessage(pushSubscription)
-    {
-      var p = new Promise(function(res, rej) {
-        navigator.serviceWorker.onmessage = function(e) {
-          if (e.data.type == "finished") {
+    function waitOnWorkerMessage(type) {
+      return new Promise(function(res, rej) {
+        function onMessage(e) {
+          if (e.data.type == type) {
+            navigator.serviceWorker.removeEventListener("message", onMessage);
            (e.data.okay == "yes" ? res : rej)(e.data);
          }
-        };
+        }
+        navigator.serviceWorker.addEventListener("message", onMessage);
      });
-      return p;
    }

-
  </script>
 </head>
 <body>
--- a/dom/push/test/mochitest.ini
+++ b/dom/push/test/mochitest.ini
@ -6,6 +6,7 @@ support-files =
  frame.html
  webpush.js
  lifetime_worker.js
+  test_utils.js

 [test_has_permissions.html]
 skip-if = os == "android" || toolkit == "gonk"
@ -21,6 +22,8 @@ skip-if = os == "android" || toolkit == "gonk"
 skip-if = os == "android" || toolkit == "gonk"
 [test_multiple_register_different_scope.html]
 skip-if = os == "android" || toolkit == "gonk"
+[test_subscription_change.html]
+skip-if = os == "android" || toolkit == "gonk"
 [test_data.html]
 skip-if = os == "android" || toolkit == "gonk"
 # Disabled for too many intermittent failures (bug 1164432)
--- a/dom/push/test/test_data.html
+++ b/dom/push/test/test_data.html
@ -11,6 +11,7 @@ http://creativecommons.org/licenses/publicdomain/
  <title>Test for Bug 1185544</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="/tests/SimpleTest/SpawnTask.js"></script>
+  <script type="text/javascript" src="/tests/dom/push/test/test_utils.js"></script>
  <script type="text/javascript" src="/tests/dom/push/test/webpush.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
  <meta http-equiv="Content-type" content="text/html;charset=UTF-8">
@ -25,25 +26,10 @@ http://creativecommons.org/licenses/publicdomain/

 <script class="testbody" type="text/javascript">

-  SimpleTest.registerCleanupFunction(() =>
-    new Promise(resolve => SpecialPowers.popPermissions(resolve))
-  );
-
  var registration;
  add_task(function* start() {
-    yield new Promise(resolve => {
-      SpecialPowers.pushPermissions([
-        { type: "desktop-notification", allow: true, context: document },
-        ], resolve);
-    });
-    yield new Promise(resolve => {
-      SpecialPowers.pushPrefEnv({"set": [
-        ["dom.push.enabled", true],
-        ["dom.serviceWorkers.exemptFromPerDomainMax", true],
-        ["dom.serviceWorkers.enabled", true],
-        ["dom.serviceWorkers.testing.enabled", true]
-        ]}, resolve);
-    });
+    yield setupPrefs();
+    yield setPushPermission(true);

    var url = "worker.js" + "?" + (Math.random());
    registration = yield navigator.serviceWorker.register(url, {scope: "."});
@ -51,15 +37,7 @@ http://creativecommons.org/licenses/publicdomain/

  var controlledFrame;
  add_task(function* createControlledIFrame() {
-    yield new Promise(function(res, rej) {
-      var iframe = document.createElement('iframe');
-      iframe.id = "controlledFrame";
-      iframe.src = "http://mochi.test:8888/tests/dom/push/test/frame.html";
-
-      iframe.onload = () => res();
-      controlledFrame = iframe;
-      document.body.appendChild(iframe);
-    });
+    controlledFrame = yield injectControlledFrame();
  });

  var pushSubscription;
@ -67,16 +45,6 @@ http://creativecommons.org/licenses/publicdomain/
    pushSubscription = yield registration.pushManager.subscribe();
  });

-  function sendRequestToWorker(request) {
-    return new Promise((resolve, reject) => {
-      var channel = new MessageChannel();
-      channel.port1.onmessage = e => {
-        (e.data.error ? reject : resolve)(e.data);
-      };
-      registration.active.postMessage(request, [channel.port2]);
-    });
-  }
-
  function base64UrlDecode(s) {
    s = s.replace(/-/g, '+').replace(/_/g, '/');

@ -138,7 +106,7 @@ http://creativecommons.org/licenses/publicdomain/

  function waitForMessage(pushSubscription, message) {
    return Promise.all([
-      controlledFrame.contentWindow.waitOnPushMessage(pushSubscription),
+      controlledFrame.waitOnWorkerMessage("finished"),
      webpush(pushSubscription, message),
    ]).then(([message]) => message);
  }
@ -190,11 +158,10 @@ http://creativecommons.org/licenses/publicdomain/
      reader.readAsText(message.data.blob);
    });
    is(text, "Hi! \ud83d\udc40", "Wrong blob data for message with emoji");
-    is(text, "Hi! \ud83d\udc40", "Wrong blob data for message with emoji");

    // Send a blank message.
    var [message] = yield Promise.all([
-      controlledFrame.contentWindow.waitOnPushMessage(pushSubscription),
+      controlledFrame.waitOnWorkerMessage("finished"),
      fetch("http://mochi.test:8888/tests/dom/push/test/push-server.sjs", {
        method: "PUT",
        headers: {
@ -207,8 +174,7 @@ http://creativecommons.org/licenses/publicdomain/
  });

  add_task(function* unsubscribe() {
-    controlledFrame.parentNode.removeChild(controlledFrame);
-    controlledFrame = null;
+    controlledFrame.remove();
    yield pushSubscription.unsubscribe();
  });

--- a/dom/push/test/test_permissions.html
+++ b/dom/push/test/test_permissions.html
@ -11,6 +11,7 @@ http://creativecommons.org/licenses/publicdomain/
  <title>Test for Bug 1038811</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="/tests/SimpleTest/SpawnTask.js"></script>
+  <script type="text/javascript" src="/tests/dom/push/test/test_utils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
  <meta http-equiv="Content-type" content="text/html;charset=UTF-8">
 </head>
@ -30,21 +31,14 @@ http://creativecommons.org/licenses/publicdomain/

  var registration;
  add_task(function* start() {
-    SpecialPowers.addPermission("desktop-notification", false, document);
-    yield new Promise(resolve => {
-      SpecialPowers.pushPrefEnv({"set": [
-        ["dom.push.enabled", true],
-        ["dom.serviceWorkers.exemptFromPerDomainMax", true],
-        ["dom.serviceWorkers.enabled", true],
-        ["dom.serviceWorkers.testing.enabled", true]
-        ]}, resolve);
-    });
+    yield setupPrefs();
+    yield setPushPermission(false);

    var url = "worker.js" + "?" + Math.random();
    registration = yield navigator.serviceWorker.register(url, {scope: "."});
  });

-  add_task(function* setupPushNotification() {
+  add_task(function* denySubscribe() {
    try {
      yield registration.pushManager.subscribe();
      ok(false, "subscribe() should fail because no permission for push");
@ -54,6 +48,17 @@ http://creativecommons.org/licenses/publicdomain/
    }
  });

+  add_task(function* denySubscribeInWorker() {
+    // If permission is revoked, `getSubscription()` should return `null`, and
+    // `subscribe()` should reject immediately. Calling these from the worker
+    // should not deadlock the main thread (see bug 1228723).
+    var errorInfo = yield sendRequestToWorker({
+      type: "denySubscribe",
+    });
+    ok(errorInfo.isDOMException, "Wrong exception type");
+    is(errorInfo.name, "PermissionDeniedError", "Wrong exception name");
+  });
+
  add_task(function* getEndpoint() {
    var pushSubscription = yield registration.pushManager.getSubscription();
    is(pushSubscription, null, "getSubscription() should return null because no permission for push");
@ -75,12 +80,7 @@ http://creativecommons.org/licenses/publicdomain/
      state: "prompt",
    }];
    for (var test of tests) {
-      if (test.action == permissionManager.UNKNOWN_ACTION) {
-        SpecialPowers.removePermission("desktop-notification", document);
-      } else {
-        SpecialPowers.addPermission("desktop-notification",
-          test.action, document);
-      }
+      yield setPushPermission(test.action);
      var state = yield registration.pushManager.permissionState();
      is(state, test.state, JSON.stringify(test));
    }
--- a/dom/push/test/test_register.html
+++ b/dom/push/test/test_register.html
@ -10,6 +10,8 @@ http://creativecommons.org/licenses/publicdomain/
 <head>
  <title>Test for Bug 1038811</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript" src="/tests/SimpleTest/SpawnTask.js"></script>
+  <script type="text/javascript" src="/tests/dom/push/test/test_utils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
  <meta http-equiv="Content-type" content="text/html;charset=UTF-8">
 </head>
@ -27,112 +29,63 @@ http://creativecommons.org/licenses/publicdomain/
  //  console.log(str + "\n");
  }

-  var controlledFrame;
-  function createControlledIFrame(swr) {
-    var p = new Promise(function(res, rej) {
-      var iframe = document.createElement('iframe');
-      iframe.id = "controlledFrame";
-      iframe.src = "http://mochi.test:8888/tests/dom/push/test/frame.html";
-
-      iframe.onload = function() {
-        res(swr)
-      }
-      controlledFrame = iframe;
-      document.body.appendChild(iframe);
-    });
-    return p;
-  }
-
-  function checkPermissionState(swr) {
-    return swr.pushManager.permissionState().then(function(state) {
-      ok(state === "granted", "permissionState() should resolve to granted.");
-      return swr;
-    }).catch(function(e) {
-      ok(false, "permissionState() should resolve to granted.");
-      return swr;
-    });
-  }
-
-  function sendPushToPushServer(pushEndpoint) {
-    // Work around CORS for now.
-    var xhr = new XMLHttpRequest();
-    xhr.open('GET', "http://mochi.test:8888/tests/dom/push/test/push-server.sjs", true);
-    xhr.setRequestHeader("X-Push-Method", "PUT");
-    xhr.setRequestHeader("X-Push-Server", pushEndpoint);
-    xhr.onload = function(e) {
-      debug("xhr : " + this.status);
-    }
-    xhr.onerror = function(e) {
-      debug("xhr error: " + e);
-    }
-    xhr.send("version=24601");
-  }
-
  var registration;
+  add_task(function* start() {
+    yield setupPrefs();
+    yield setPushPermission(true);

-  function start() {
-    return navigator.serviceWorker.register("worker.js" + "?" + (Math.random()), {scope: "."})
-    .then((swr) => registration = swr);
-  }
+    var url = "worker.js" + "?" + (Math.random());
+    registration = yield navigator.serviceWorker.register(url, {scope: "."});
+  });

-  function unregister() {
-    return registration.unregister().then(function(result) {
-      ok(result, "Unregister should return true.");
-    }, function(e) {
-      dump("Unregistering the SW failed with " + e + "\n");
+  var controlledFrame;
+  add_task(function* createControlledIFrame() {
+    controlledFrame = yield injectControlledFrame();
+  });
+
+  add_task(function* checkPermissionState() {
+    var state = yield registration.pushManager.permissionState();
+    is(state, "granted", "permissionState() should resolve to granted.");
+  });
+
+  var pushSubscription;
+  add_task(function* subscribe() {
+    pushSubscription = yield registration.pushManager.subscribe();
+  });
+
+  add_task(function* resubscribe() {
+    var data = yield sendRequestToWorker({
+      type: "resubscribe",
+      endpoint: pushSubscription.endpoint,
    });
-  }
+    pushSubscription = yield registration.pushManager.getSubscription();
+    is(data.endpoint, pushSubscription.endpoint,
+       "Subscription endpoints should match after resubscribing in worker");
+  });

-  function setupPushNotification(swr) {
-    var p = new Promise(function(res, rej) {
-      swr.pushManager.subscribe().then(
-        function(pushSubscription) {
-          ok(true, "successful registered for push notification");
-          res(pushSubscription);
-        }, function(error) {
-          ok(false, "could not register for push notification");
-          res(null);
-        }
-        );
-    });
-    return p;
-  }
+  add_task(function* waitForPushNotification() {
+    yield Promise.all([
+      controlledFrame.waitOnWorkerMessage("finished"),
+      fetch("http://mochi.test:8888/tests/dom/push/test/push-server.sjs", {
+        method: "PUT",
+        headers: {
+          "X-Push-Method": "POST",
+          "X-Push-Server": pushSubscription.endpoint,
+        },
+      }),
+    ]);
+  });

-  function unregisterPushNotification(pushSubscription) {
-    controlledFrame.parentNode.removeChild(controlledFrame);
-    controlledFrame = null;
-    return pushSubscription.unsubscribe();
-  }
+  add_task(function* unsubscribe() {
+    controlledFrame.remove();
+    yield pushSubscription.unsubscribe();
+  });

-  function waitForPushNotification(pushSubscription) {
-    var p = controlledFrame.contentWindow.waitOnPushMessage();
-    sendPushToPushServer(pushSubscription.endpoint);
-    return p.then(function() {
-      return pushSubscription;
-    });
-  }
+  add_task(function* unregister() {
+    var result = yield registration.unregister();
+    ok(result, "Unregister should return true.");
+  });

-  function runTest() {
-    start()
-    .then(createControlledIFrame)
-    .then(checkPermissionState)
-    .then(setupPushNotification)
-    .then(waitForPushNotification)
-    .then(unregisterPushNotification)
-    .then(unregister)
-    .catch(function(e) {
-      ok(false, "Some test failed with error " + e);
-    }).then(SimpleTest.finish);
-  }
-
-  SpecialPowers.pushPrefEnv({"set": [
-    ["dom.push.enabled", true],
-    ["dom.serviceWorkers.exemptFromPerDomainMax", true],
-    ["dom.serviceWorkers.enabled", true],
-    ["dom.serviceWorkers.testing.enabled", true]
-    ]}, runTest);
-  SpecialPowers.addPermission("desktop-notification", true, document);
-  SimpleTest.waitForExplicitFinish();
 </script>
 </body>
 </html>
--- a/dom/push/test/test_subscription_change.html
+++ b/dom/push/test/test_subscription_change.html
@ -0,0 +1,68 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Bug 1205109: Make `pushsubscriptionchange` extendable.
+
+Any copyright is dedicated to the Public Domain.
+http://creativecommons.org/licenses/publicdomain/
+
+-->
+<head>
+  <title>Test for Bug 1205109</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript" src="/tests/SimpleTest/SpawnTask.js"></script>
+  <script type="text/javascript" src="/tests/dom/push/test/test_utils.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <meta http-equiv="Content-type" content="text/html;charset=UTF-8">
+</head>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1205109">Mozilla Bug 1205109</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+
+<script class="testbody" type="text/javascript">
+
+  var registration;
+  add_task(function* start() {
+    yield setupPrefs();
+    yield setPushPermission(true);
+
+    var url = "worker.js" + "?" + (Math.random());
+    registration = yield navigator.serviceWorker.register(url, {scope: "."});
+  });
+
+  var controlledFrame;
+  add_task(function* createControlledIFrame() {
+    controlledFrame = yield injectControlledFrame();
+  });
+
+  add_task(function* togglePermission() {
+    var subscription = yield registration.pushManager.subscribe();
+    ok(subscription, "Should create a push subscription");
+
+    yield setPushPermission(false);
+    var permissionState = yield registration.pushManager.permissionState();
+    is(permissionState, "denied", "Should deny push permission");
+
+    var subscription = yield registration.pushManager.getSubscription();
+    is(subscription, null, "Should not return subscription when permission is revoked");
+
+    var changePromise = controlledFrame.waitOnWorkerMessage("changed");
+    yield setPushPermission(true);
+    yield changePromise;
+
+    subscription = yield registration.pushManager.getSubscription();
+    is(subscription, null, "Should drop subscription after reinstating permission");
+  });
+
+  add_task(function* unsubscribe() {
+    controlledFrame.remove();
+    yield registration.unregister();
+  });
+
+</script>
+</body>
+</html>
--- a/dom/push/test/test_utils.js
+++ b/dom/push/test/test_utils.js
@ -0,0 +1,60 @@
+// Remove permissions and prefs when the test finishes.
+SimpleTest.registerCleanupFunction(() =>
+  new Promise(resolve => {
+    SpecialPowers.flushPermissions(_ => {
+      SpecialPowers.flushPrefEnv(resolve);
+    });
+  })
+);
+
+function setPushPermission(allow) {
+  return new Promise(resolve => {
+    SpecialPowers.pushPermissions([
+      { type: "desktop-notification", allow, context: document },
+      ], resolve);
+  });
+}
+
+function setupPrefs() {
+  return new Promise(resolve => {
+    SpecialPowers.pushPrefEnv({"set": [
+      ["dom.push.enabled", true],
+      ["dom.serviceWorkers.exemptFromPerDomainMax", true],
+      ["dom.serviceWorkers.enabled", true],
+      ["dom.serviceWorkers.testing.enabled", true]
+      ]}, resolve);
+  });
+}
+
+function injectControlledFrame(target = document.body) {
+  return new Promise(function(res, rej) {
+    var iframe = document.createElement("iframe");
+    iframe.src = "/tests/dom/push/test/frame.html";
+
+    var controlledFrame = {
+      remove() {
+        target.removeChild(iframe);
+        iframe = null;
+      },
+      waitOnWorkerMessage(type) {
+        return iframe ? iframe.contentWindow.waitOnWorkerMessage(type) :
+               Promise.reject(new Error("Frame removed from document"));
+      },
+    };
+
+    iframe.onload = () => res(controlledFrame);
+    target.appendChild(iframe);
+  });
+}
+
+function sendRequestToWorker(request) {
+  return navigator.serviceWorker.ready.then(registration => {
+    return new Promise((resolve, reject) => {
+      var channel = new MessageChannel();
+      channel.port1.onmessage = e => {
+        (e.data.error ? reject : resolve)(e.data);
+      };
+      registration.active.postMessage(request, [channel.port2]);
+    });
+  });
+}
--- a/dom/push/test/worker.js
+++ b/dom/push/test/worker.js
@ -1,8 +1,16 @@
 // Any copyright is dedicated to the Public Domain.
 // http://creativecommons.org/licenses/publicdomain/

+// This worker is used for two types of tests. `handlePush` sends messages to
+// `frame.html`, which verifies that the worker can receive push messages.
+
+// `handleMessage` receives messages from `test_push_manager_worker.html`
+// and `test_data.html`, and verifies that `PushManager` can be used from
+// the worker.
+
 this.onpush = handlePush;
 this.onmessage = handleMessage;
+this.onpushsubscriptionchange = handlePushSubscriptionChange;

 function getJSON(data) {
  var result = {
@ -17,48 +25,105 @@ function getJSON(data) {
  return result;
 }

-function handlePush(event) {
+function assert(value, message) {
+  if (!value) {
+    throw new Error(message);
+  }
+}

-  event.waitUntil(self.clients.matchAll().then(function(result) {
-    if (event instanceof PushEvent) {
-      if (!('data' in event)) {
-        result[0].postMessage({type: "finished", okay: "yes"});
-        return;
-      }
-      var message = {
-        type: "finished",
-        okay: "yes",
-      };
-      if (event.data) {
-        message.data = {
-          text: event.data.text(),
-          arrayBuffer: event.data.arrayBuffer(),
-          json: getJSON(event.data),
-          blob: event.data.blob(),
-        };
-      }
-      result[0].postMessage(message);
+function broadcast(event, promise) {
+  event.waitUntil(Promise.resolve(promise).then(message => {
+    return self.clients.matchAll().then(clients => {
+      clients.forEach(client => client.postMessage(message));
+    });
+  }));
+}
+
+function reply(event, promise) {
+  event.waitUntil(Promise.resolve(promise).then(result => {
+    event.ports[0].postMessage(result);
+  }).catch(error => {
+    event.ports[0].postMessage({
+      error: String(error),
+    });
+  }));
+}
+
+function handlePush(event) {
+  if (event instanceof PushEvent) {
+    if (!('data' in event)) {
+      broadcast(event, {type: "finished", okay: "yes"});
      return;
    }
-    result[0].postMessage({type: "finished", okay: "no"});
-  }));
+    var message = {
+      type: "finished",
+      okay: "yes",
+    };
+    if (event.data) {
+      message.data = {
+        text: event.data.text(),
+        arrayBuffer: event.data.arrayBuffer(),
+        json: getJSON(event.data),
+        blob: event.data.blob(),
+      };
+    }
+    broadcast(event, message);
+    return;
+  }
+  broadcast(event, {type: "finished", okay: "no"});
 }

 function handleMessage(event) {
  if (event.data.type == "publicKey") {
-    event.waitUntil(self.registration.pushManager.getSubscription().then(subscription => {
-      event.ports[0].postMessage({
+    reply(event, self.registration.pushManager.getSubscription().then(
+      subscription => ({
        p256dh: subscription.getKey("p256dh"),
        auth: subscription.getKey("auth"),
-      });
-    }).catch(error => {
-      event.ports[0].postMessage({
-        error: String(error),
-      });
+      })
+    ));
+    return;
+  }
+  if (event.data.type == "resubscribe") {
+    reply(event, self.registration.pushManager.getSubscription().then(
+      subscription => {
+        assert(subscription.endpoint == event.data.endpoint,
+          "Wrong push endpoint in worker");
+        return subscription.unsubscribe();
+      }
+    ).then(result => {
+      assert(result, "Error unsubscribing in worker");
+      return self.registration.pushManager.getSubscription();
+    }).then(subscription => {
+      assert(!subscription, "Subscription not removed in worker");
+      return self.registration.pushManager.subscribe();
+    }).then(subscription => {
+      return {
+        endpoint: subscription.endpoint,
+      };
    }));
    return;
  }
-  event.ports[0].postMessage({
-    error: "Invalid message type: " + event.data.type,
-  });
+  if (event.data.type == "denySubscribe") {
+    reply(event, self.registration.pushManager.getSubscription().then(
+      subscription => {
+        assert(!subscription,
+          "Should not return worker subscription with revoked permission");
+        return self.registration.pushManager.subscribe().then(_ => {
+          assert(false, "Expected error subscribing with revoked permission");
+        }, error => {
+          return {
+            isDOMException: error instanceof DOMException,
+            name: error.name,
+          };
+        });
+      }
+    ));
+    return;
+  }
+  reply(event, Promise.reject(
+    "Invalid message type: " + event.data.type));
+}
+
+function handlePushSubscriptionChange(event) {
+  broadcast(event, {type: "changed", okay: "yes"});
 }
--- a/dom/settings/SettingsDB.jsm
+++ b/dom/settings/SettingsDB.jsm
@ -83,7 +83,7 @@ SettingsDB.prototype = {
    let chan = NetUtil.newChannel({
      uri: NetUtil.newURI(settingsFile),
      loadUsingSystemPrincipal: true});
-    let stream = chan.open();
+    let stream = chan.open2();
    // Obtain a converter to read from a UTF-8 encoded input stream.
    let converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"]
                    .createInstance(Ci.nsIScriptableUnicodeConverter);
--- a/dom/xslt/tests/XSLTMark/XSLTMark-static.js
+++ b/dom/xslt/tests/XSLTMark/XSLTMark-static.js
@ -12,6 +12,8 @@ const nsIFilePicker   = Components.interfaces.nsIFilePicker;
 const STDURL_CTRID    = "@mozilla.org/network/standard-url;1";
 const nsIURI          = Components.interfaces.nsIURI;

+Components.utils.import("resource://gre/modules/NetUtil.jsm");
+
 var gStop = false;

 function loadFile(aUriSpec)
@ -22,17 +24,13 @@ function loadFile(aUriSpec)
    if (!serv) {
        throw Components.results.ERR_FAILURE;
    }
-    var chan = serv.newChannel2(aUriSpec,
-                                null,
-                                null,
-                                null,      // aLoadingNode
-                                Services.scriptSecurityManager.getSystemPrincipal(),
-                                null,      // aTriggeringPrincipal
-                                Ci.nsILoadInfo.SEC_NORMAL,
-                                Ci.nsIContentPolicy.TYPE_OTHER);
+    var chan = NetUtil.newChannel({
+        uri: aUriSpec,
+        loadUsingSystemPrincipal: true
+    });
    var instream = 
        Components.classes[SIS_CTRID].createInstance(nsISIS);
-    instream.init(chan.open());
+    instream.init(chan.open2());

    return instream.read(instream.available());
 }
--- a/dom/xslt/tests/buster/buster-test.js
+++ b/dom/xslt/tests/buster/buster-test.js
@ -3,6 +3,8 @@
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

+Components.utils.import("resource://gre/modules/NetUtil.jsm");
+
 var parser = new DOMParser();
 var methodExpr = (new XPathEvaluator).createExpression("xsl:output/@method",
    {
@ -307,21 +309,12 @@ runItem.prototype =

    loadTextFile : function(url)
    {
-        var serv = Components.classes[IOSERVICE_CTRID].
-            getService(nsIIOService);
-        if (!serv) {
-            throw Components.results.ERR_FAILURE;
-        }
-        var chan = serv.newChannel2(url,
-                                    null,
-                                    null,
-                                    null,      // aLoadingNode
-                                    Services.scriptSecurityManager.getSystemPrincipal(),
-                                    null,      // aTriggeringPrincipal
-                                    Ci.nsILoadInfo.SEC_NORMAL,
-                                    Ci.nsIContentPolicy.TYPE_OTHER);
+        var chan = NetUtil.newChannel({
+            uri: url,
+            loadUsingSystemPrincipal: true
+        });
        var instream = doCreate(SIS_CTRID, nsISIS);
-        instream.init(chan.open());
+        instream.init(chan.open2());

        return instream.read(instream.available());
    }
--- a/extensions/spellcheck/src/mozInlineSpellChecker.cpp
+++ b/extensions/spellcheck/src/mozInlineSpellChecker.cpp
@ -134,7 +134,17 @@ mozInlineSpellStatus::InitForEditorChange(
                                getter_AddRefs(mAnchorRange));
  NS_ENSURE_SUCCESS(rv, rv);

-  if (aAction == EditAction::deleteSelection) {
+  nsCOMPtr<nsINode> prevNode = do_QueryInterface(aPreviousNode);
+  NS_ENSURE_STATE(prevNode);
+
+  bool deleted = aAction == EditAction::deleteSelection;
+  if (aAction == EditAction::insertIMEText) {
+    // IME may remove the previous node if it cancels composition when
+    // there is no text around the composition.
+    deleted = !prevNode->IsInComposedDoc();
+  }
+
+  if (deleted) {
    // Deletes are easy, the range is just the current anchor. We set the range
    // to check to be empty, FinishInitOnEvent will fill in the range to be
    // the current word.
@ -146,9 +156,6 @@ mozInlineSpellStatus::InitForEditorChange(
  mOp = eOpChange;

  // range to check
-  nsCOMPtr<nsINode> prevNode = do_QueryInterface(aPreviousNode);
-  NS_ENSURE_STATE(prevNode);
-
  mRange = new nsRange(prevNode);

  // ...we need to put the start and end in the correct order
--- a/gfx/layers/apz/src/APZCTreeManager.cpp
+++ b/gfx/layers/apz/src/APZCTreeManager.cpp
@ -1087,10 +1087,9 @@ APZCTreeManager::ReceiveInputEvent(WidgetInputEvent& aEvent,
                                   ScrollableLayerGuid* aOutTargetGuid,
                                   uint64_t* aOutInputBlockId)
 {
-  // This function will be removed once metro code is modified to use the
-  // InputData version of ReceiveInputEvent.
  // In general it is preferable to use the version of ReceiveInputEvent
-  // that takes an InputData, as that is usable from off-main-thread.
+  // that takes an InputData, as that is usable from off-main-thread. On some
+  // platforms OMT input isn't possible, and there we can use this version.

  MOZ_ASSERT(NS_IsMainThread());
  APZThreadUtils::AssertOnControllerThread();
--- a/gfx/layers/apz/test/mochitest/apz_test_native_event_utils.js
+++ b/gfx/layers/apz/test/mochitest/apz_test_native_event_utils.js
@ -117,10 +117,14 @@ function synthesizeNativeWheelAndWaitForWheelEvent(aElement, aX, aY, aDeltaX, aD
 // If the event targets content in a subdocument, |aElement| should be inside
 // the subdocument.  See synthesizeNativeWheel for details on the other
 // parameters.
+var scrollActionId = 0;
 function synthesizeNativeWheelAndWaitForScrollEvent(aElement, aX, aY, aDeltaX, aDeltaY, aCallback) {
+  scrollActionId++;
+  dump("[WHEEL_TRANS_LOG] [" + Date.now() + "] initiating scroll action " + scrollActionId + "\n");
  var targetWindow = aElement.ownerDocument.defaultView;
  var useCapture = true;  // scroll events don't always bubble
  targetWindow.addEventListener("scroll", function scrollWaiter(e) {
+    dump("[WHEEL_TRANS_LOG] [" + Date.now() + "] scroll action " + scrollActionId + ": received scroll event, target is " + e.target + " with id " + e.target.id + "\n");
    targetWindow.removeEventListener("scroll", scrollWaiter, useCapture);
    setTimeout(aCallback, 0);
  }, useCapture);
--- a/gfx/layers/apz/test/mochitest/test_wheel_transactions.html
+++ b/gfx/layers/apz/test/mochitest/test_wheel_transactions.html
@ -43,6 +43,10 @@ function scrollWheelOver(element, deltaY) {
  synthesizeNativeWheelAndWaitForScrollEvent(element, 10, 10, 0, deltaY, driveTest);
 }

+function reportPositions(outer, inner) {
+  dump("[WHEEL_TRANS_LOG] [" + Date.now() + "] outer.scrollTop = " + outer.scrollTop + " and inner.scrollTop = " + inner.scrollTop + "\n");
+}
+
 function* runTest() {
  var outer = document.getElementById('outer-frame');
  var inner = document.getElementById('inner-frame');
@ -55,8 +59,10 @@ function* runTest() {
  window.addEventListener("wheel", wheelTargetRecorder);

  // Scroll |outer| to the bottom.
+  dump("[WHEEL_TRANS_LOG] [" + Date.now() + "] scrolling outer to the bottom\n");
  while (outer.scrollTop < outer.scrollTopMax) {
    yield scrollWheelOver(outer, -10);
+    reportPositions(outer, inner);
  }

  // Verify that this has brought |inner| under the wheel.
@ -64,7 +70,9 @@ function* runTest() {
  window.removeEventListener("wheel", wheelTargetRecorder);

  // Immediately after, scroll it back up a bit.
+  dump("[WHEEL_TRANS_LOG] [" + Date.now() + "] scroll outer back up a bit\n");
  yield scrollWheelOver(outer, 10);
+  reportPositions(outer, inner);

  // Check that it was |outer| that scrolled back, and |inner| didn't
  // scroll at all, as all the above scrolls should be in the same
@ -81,21 +89,27 @@ function* runTest() {

  // Scroll up a bit more. It's still |outer| scrolling because
  // |inner| is still scrolled all the way to the top.
+  dump("[WHEEL_TRANS_LOG] [" + Date.now() + "] scrolling up\n");
  yield scrollWheelOver(outer, 10);
+  reportPositions(outer, inner);

  // Wait for the transaction timeout to elapse.
  // timeout * 5 is used to make it less likely that the timeout is less than
  // the system timestamp resolution
+  dump("[WHEEL_TRANS_LOG] waiting for timeout\n");
  yield window.setTimeout(driveTest, timeout * 5);

  // Now scroll down. The transaction having timed out, the event
  // should pick up a new target, and that should be |inner|.
+  dump("[WHEEL_TRANS_LOG] [" + Date.now() + "] scrolling down after waiting for timeout\n");
  yield scrollWheelOver(outer, -10);
+  dump("[WHEEL_TRANS_LOG] [" + Date.now() + "] checking if inner has scrolled\n");
  ok(inner.scrollTop > 0, "'inner' should have been scrolled");

  // Finally, test scroll handoff after a timeout.

  // Continue scrolling |inner| down to the bottom.
+  dump("[WHEEL_TRANS_LOG] [" + Date.now() + "] scrolling inner to the bottom\n");
  var prevScrollTop = inner.scrollTop;
  while (inner.scrollTop < inner.scrollTopMax) {
    yield scrollWheelOver(outer, -10);
@ -110,6 +124,7 @@ function* runTest() {
  yield window.setTimeout(driveTest, timeout * 5);

  // Continued downward scrolling should scroll |outer| to the bottom.
+  dump("[WHEEL_TRANS_LOG] [" + Date.now() + "] scrolling outer to the bottom\n");
  prevScrollTop = outer.scrollTop;
  while (outer.scrollTop < outer.scrollTopMax) {
    yield scrollWheelOver(outer, -10);
@ -133,7 +148,9 @@ function driveTest() {
 function startTest() {
  // Disable smooth scrolling because it makes the test flaky (we don't have a good
  // way of detecting when the scrolling is finished).
-  SpecialPowers.pushPrefEnv({"set": [["general.smoothScroll", false]]}, driveTest);
+  SpecialPowers.pushPrefEnv({"set": [["general.smoothScroll", false],
+                                     ["layers.dump", true],
+                                     ["apz.printtree", true]]}, driveTest);
 }

 SimpleTest.waitForExplicitFinish();
--- a/gfx/layers/apz/util/APZCCallbackHelper.cpp
+++ b/gfx/layers/apz/util/APZCCallbackHelper.cpp
@ -532,13 +532,19 @@ APZCCallbackHelper::ApplyCallbackTransform(const LayoutDeviceIntPoint& aPoint,
 }

 void
-APZCCallbackHelper::ApplyCallbackTransform(WidgetTouchEvent& aEvent,
+APZCCallbackHelper::ApplyCallbackTransform(WidgetEvent& aEvent,
                                           const ScrollableLayerGuid& aGuid,
                                           const CSSToLayoutDeviceScale& aScale)
 {
-  for (size_t i = 0; i < aEvent.touches.Length(); i++) {
-    aEvent.touches[i]->mRefPoint = ApplyCallbackTransform(
-        aEvent.touches[i]->mRefPoint, aGuid, aScale);
+  if (aEvent.AsTouchEvent()) {
+    WidgetTouchEvent& event = *(aEvent.AsTouchEvent());
+    for (size_t i = 0; i < event.touches.Length(); i++) {
+      event.touches[i]->mRefPoint = ApplyCallbackTransform(
+          event.touches[i]->mRefPoint, aGuid, aScale);
+    }
+  } else {
+    aEvent.refPoint = ApplyCallbackTransform(
+        aEvent.refPoint, aGuid, aScale);
  }
 }

--- a/gfx/layers/apz/util/APZCCallbackHelper.h
+++ b/gfx/layers/apz/util/APZCCallbackHelper.h
@ -99,9 +99,9 @@ public:
                           const ScrollableLayerGuid& aGuid,
                           const CSSToLayoutDeviceScale& aScale);

-    /* Convenience function for applying a callback transform to all touch
-     * points of a touch event. */
-    static void ApplyCallbackTransform(WidgetTouchEvent& aEvent,
+    /* Convenience function for applying a callback transform to all refpoints
+     * in the input event. */
+    static void ApplyCallbackTransform(WidgetEvent& aEvent,
                                       const ScrollableLayerGuid& aGuid,
                                       const CSSToLayoutDeviceScale& aScale);

--- a/ipc/chromium/src/base/message_pump_libevent.h
+++ b/ipc/chromium/src/base/message_pump_libevent.h
@ -7,7 +7,7 @@

 #include "base/message_pump.h"
 #include "base/time.h"
-#include "nsAutoPtr.h"
+#include "mozilla/UniquePtr.h"

 // Declare structs we need from libevent.h rather than including it
 struct event_base;
@ -192,7 +192,7 @@ public:
    mBufferSize(aBufferSize),
    mTerminator(aTerminator)
  {
-    mReceiveBuffer = new char[mBufferSize];
+    mReceiveBuffer = mozilla::MakeUnique<char[]>(mBufferSize);
  }

  ~LineWatcher() {}
@ -208,7 +208,7 @@ protected:
 private:
  virtual void OnFileCanReadWithoutBlocking(int aFd) final override;

-  nsAutoPtr<char> mReceiveBuffer;
+  mozilla::UniquePtr<char[]> mReceiveBuffer;
  int mReceivedIndex;
  int mBufferSize;
  char mTerminator;
--- a/js/src/asmjs/Wasm.cpp
+++ b/js/src/asmjs/Wasm.cpp
@ -24,6 +24,9 @@
 #include "asmjs/WasmGenerator.h"
 #include "asmjs/WasmText.h"

+#include "jsatominlines.h"
+#include "jsobjinlines.h"
+
 using namespace js;
 using namespace js::wasm;

--- a/js/src/gc/Barrier.cpp
+++ b/js/src/gc/Barrier.cpp
@ -9,6 +9,7 @@
 #include "jscompartment.h"
 #include "jsobj.h"

+#include "builtin/TypedObject.h"
 #include "gc/Policy.h"
 #include "gc/Zone.h"
 #include "js/HashTable.h"
--- a/js/src/jsgc.cpp
+++ b/js/src/jsgc.cpp
@ -214,6 +214,7 @@
 #include "gc/GCTrace.h"
 #include "gc/Marking.h"
 #include "gc/Memory.h"
+#include "gc/Policy.h"
 #include "jit/BaselineJIT.h"
 #include "jit/IonCode.h"
 #include "jit/JitcodeMap.h"
--- a/js/src/vm/Shape.cpp
+++ b/js/src/vm/Shape.cpp
@ -17,6 +17,7 @@
 #include "jshashutil.h"
 #include "jsobj.h"

+#include "gc/Policy.h"
 #include "js/HashTable.h"

 #include "jscntxtinlines.h"
--- a/layout/base/nsPresShell.cpp
+++ b/layout/base/nsPresShell.cpp
@ -183,6 +183,7 @@
 #include "nsSubDocumentFrame.h"
 #include "nsQueryObject.h"
 #include "nsLayoutStylesheetCache.h"
+#include "mozilla/layers/InputAPZContext.h"

 #ifdef ANDROID
 #include "nsIDocShellTreeOwner.h"
@ -5454,6 +5455,13 @@ PresShell::ProcessSynthMouseMoveEvent(bool aFromScroll)

  nsCOMPtr<nsIPresShell> shell = pointVM->GetPresShell();
  if (shell) {
+    // Since this gets run in a refresh tick there isn't an InputAPZContext on
+    // the stack from the nsBaseWidget. We need to simulate one with at least
+    // the correct target guid, so that the correct callback transform gets
+    // applied if this event goes to a child process. The input block id is set
+    // to 0 because this is a synthetic event which doesn't really belong to any
+    // input block. Same for the APZ response field.
+    InputAPZContext apzContext(mMouseEventTargetGuid, 0, nsEventStatus_eIgnore);
    shell->DispatchSynthMouseMove(&event, !aFromScroll);
  }

@ -6422,9 +6430,11 @@ PresShell::RecordMouseLocation(WidgetGUIEvent* aEvent)
      nsView* rootView = mViewManager->GetRootView();
      mMouseLocation = nsLayoutUtils::TranslateWidgetToView(mPresContext,
        aEvent->widget, aEvent->refPoint, rootView);
+      mMouseEventTargetGuid = InputAPZContext::GetTargetLayerGuid();
    } else {
      mMouseLocation =
        nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, rootFrame);
+      mMouseEventTargetGuid = InputAPZContext::GetTargetLayerGuid();
    }
 #ifdef DEBUG_MOUSE_LOCATION
    if (aEvent->mMessage == eMouseEnterIntoWidget) {
@ -6444,6 +6454,7 @@ PresShell::RecordMouseLocation(WidgetGUIEvent* aEvent)
    // this won't matter at all since we'll get the mouse move or enter after
    // the mouse exit when the mouse moves from one of our widgets into another.
    mMouseLocation = nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE);
+    mMouseEventTargetGuid = InputAPZContext::GetTargetLayerGuid();
 #ifdef DEBUG_MOUSE_LOCATION
    printf("[ps=%p]got mouse exit for %p\n",
           this, aEvent->widget);
--- a/layout/base/nsPresShell.h
+++ b/layout/base/nsPresShell.h
@ -779,6 +779,10 @@ protected:
  // over our window or there is no last observed mouse location for some
  // reason.
  nsPoint                   mMouseLocation;
+  // This is an APZ state variable that tracks the target guid for the last
+  // mouse event that was processed (corresponding to mMouseLocation). This is
+  // needed for the synthetic mouse events.
+  mozilla::layers::ScrollableLayerGuid mMouseEventTargetGuid;

  // mStyleSet owns it but we maintain a ref, may be null
  RefPtr<mozilla::CSSStyleSheet> mPrefStyleSheet;
--- a/layout/reftests/async-scrolling/position-fixed-body-ref.html
+++ b/layout/reftests/async-scrolling/position-fixed-body-ref.html
@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html reftest-async-scroll>
+<style>
+body {
+  height: 100vh;
+  margin: 0px;
+}
+#scrollbox {
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+}
+#scrolledContents {
+  height: 10000px;
+  background: radial-gradient(circle, blue 30%, transparent 0);
+  background-size: 80px 80px;
+}
+</style>
+<body>
+  <div id="scrollbox"
+       reftest-dislayport-x="0" reftest-displayport-y="0"
+       reftest-displayport-w="800" reftest-displayport-h="2000"
+       reftest-async-scroll-x="0" reftest-async-scroll-y="20">
+    <div id="scrolledContents"></div>
+  </div>
+</body>
+</html>
--- a/layout/reftests/async-scrolling/position-fixed-body.html
+++ b/layout/reftests/async-scrolling/position-fixed-body.html
@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html reftest-async-scroll>
+<style>
+body {
+  position: fixed;
+  margin: 0px;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+}
+#scrollbox {
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+}
+#scrolledContents {
+  height: 10000px;
+  background: radial-gradient(circle, blue 30%, transparent 0);
+  background-size: 80px 80px;
+}
+</style>
+<body>
+  <div id="scrollbox"
+       reftest-dislayport-x="0" reftest-displayport-y="0"
+       reftest-displayport-w="800" reftest-displayport-h="2000"
+       reftest-async-scroll-x="0" reftest-async-scroll-y="20">
+    <div id="scrolledContents"></div>
+  </div>
+</body>
+</html>
--- a/layout/reftests/async-scrolling/reftest.list
+++ b/layout/reftests/async-scrolling/reftest.list
@ -15,6 +15,7 @@ skip-if(!asyncPan) == nested-1.html nested-1-ref.html
 skip-if(!asyncPan) == nested-2.html nested-2-ref.html
 skip-if(!asyncPan) == position-fixed-1.html position-fixed-1-ref.html
 skip-if(!asyncPan) == position-fixed-2.html position-fixed-2-ref.html
+skip-if(!asyncPan) == position-fixed-body.html position-fixed-body-ref.html
 skip-if(!asyncPan) == position-fixed-cover-1.html position-fixed-cover-1-ref.html
 skip-if(!asyncPan) == position-fixed-cover-2.html position-fixed-cover-2-ref.html
 skip-if(!asyncPan) == position-fixed-cover-3.html position-fixed-cover-3-ref.html
--- a/mfbt/TypeTraits.h
+++ b/mfbt/TypeTraits.h
@ -355,6 +355,41 @@ struct IsArithmetic
  : IntegralConstant<bool, IsIntegral<T>::value || IsFloatingPoint<T>::value>
 {};

+namespace detail {
+
+template<typename T>
+struct IsMemberPointerHelper : FalseType {};
+
+template<typename T, typename U>
+struct IsMemberPointerHelper<T U::*> : TrueType {};
+
+} // namespace detail
+
+/**
+ * IsMemberPointer determines whether a type is pointer to non-static member
+ * object or a pointer to non-static member function.
+ *
+ * mozilla::IsMemberPointer<int(cls::*)>::value is true
+ * mozilla::IsMemberPointer<int*>::value is false
+ */
+template<typename T>
+struct IsMemberPointer
+  : detail::IsMemberPointerHelper<typename RemoveCV<T>::Type>
+{};
+
+/**
+ * IsScalar determines whether a type is a scalar type.
+ *
+ * mozilla::IsScalar<int>::value is true
+ * mozilla::IsScalar<int*>::value is true
+ * mozilla::IsScalar<cls>::value is false
+ */
+template<typename T>
+struct IsScalar
+  : IntegralConstant<bool, IsArithmetic<T>::value || IsEnum<T>::value ||
+                     IsPointer<T>::value || IsMemberPointer<T>::value>
+{};
+
 /* 20.9.4.3 Type properties [meta.unary.prop] */

 /**
--- a/mfbt/tests/TestTypeTraits.cpp
+++ b/mfbt/tests/TestTypeTraits.cpp
@ -7,6 +7,12 @@
 #include "mozilla/Assertions.h"
 #include "mozilla/TypeTraits.h"

+#define TEST_CV_QUALIFIERS(test, type, ...) \
+  test(type, __VA_ARGS__) \
+  test(const type, __VA_ARGS__) \
+  test(volatile type, __VA_ARGS__) \
+  test(const volatile type, __VA_ARGS__)
+
 using mozilla::AddLvalueReference;
 using mozilla::AddPointer;
 using mozilla::AddRvalueReference;
@ -137,6 +143,77 @@ static_assert(IsReference<int&>::value,
 static_assert(IsReference<int&&>::value,
              "int&& is a reference");

+namespace CPlusPlus11IsMemberPointer {
+
+using mozilla::IsMemberPointer;
+
+struct S {};
+union U {};
+
+#define ASSERT_IS_MEMBER_POINTER(type, msg) \
+  static_assert(IsMemberPointer<type>::value, #type msg);
+#define TEST_IS_MEMBER_POINTER(type) \
+  TEST_CV_QUALIFIERS(ASSERT_IS_MEMBER_POINTER, type, \
+                     " is a member pointer type")
+
+TEST_IS_MEMBER_POINTER(int S::*)
+TEST_IS_MEMBER_POINTER(int U::*)
+
+#undef TEST_IS_MEMBER_POINTER
+#undef ASSERT_IS_MEMBER_POINTER
+
+#define ASSERT_IS_NOT_MEMBER_POINTER(type, msg) \
+  static_assert(!IsMemberPointer<type>::value, #type msg);
+#define TEST_IS_NOT_MEMBER_POINTER(type) \
+  TEST_CV_QUALIFIERS(ASSERT_IS_NOT_MEMBER_POINTER, type, \
+                     " is not a member pointer type")
+
+TEST_IS_NOT_MEMBER_POINTER(int*)
+
+#undef TEST_IS_NOT_MEMBER_POINTER
+#undef ASSERT_IS_NOT_MEMBER_POINTER
+
+} // CPlusPlus11IsMemberPointer
+
+namespace CPlusPlus11IsScalar {
+
+using mozilla::IsScalar;
+
+enum E {};
+enum class EC {};
+class C {};
+struct S {};
+union U {};
+
+#define ASSERT_IS_SCALAR(type, msg) \
+  static_assert(IsScalar<type>::value, #type msg);
+#define TEST_IS_SCALAR(type) \
+  TEST_CV_QUALIFIERS(ASSERT_IS_SCALAR, type, " is a scalar type")
+
+TEST_IS_SCALAR(int)
+TEST_IS_SCALAR(float)
+TEST_IS_SCALAR(E)
+TEST_IS_SCALAR(EC)
+TEST_IS_SCALAR(S*)
+TEST_IS_SCALAR(int S::*)
+
+#undef TEST_IS_SCALAR
+#undef ASSERT_IS_SCALAR
+
+#define ASSERT_IS_NOT_SCALAR(type, msg) \
+  static_assert(!IsScalar<type>::value, #type msg);
+#define TEST_IS_NOT_SCALAR(type) \
+  TEST_CV_QUALIFIERS(ASSERT_IS_NOT_SCALAR, type, " is not a scalar type")
+
+TEST_IS_NOT_SCALAR(C)
+TEST_IS_NOT_SCALAR(S)
+TEST_IS_NOT_SCALAR(U)
+
+#undef TEST_IS_NOT_SCALAR
+#undef ASSERT_IS_NOT_SCALAR
+
+} // CPlusPlus11IsScalar
+
 struct S1 {};
 union U1 { int mX; };

--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@ -600,7 +600,11 @@ pref("apz.pan_repaint_interval", 16);
 // Whether to print the APZC tree for debugging
 pref("apz.printtree", false);

+#ifdef NIGHTLY_BUILD
+pref("apz.record_checkerboarding", true);
+#else
 pref("apz.record_checkerboarding", false);
+#endif
 pref("apz.smooth_scroll_repaint_interval", 16);
 pref("apz.test.logging_enabled", false);
 pref("apz.touch_start_tolerance", "0.1");
@ -4626,8 +4630,9 @@ pref("dom.mozPermissionSettings.enabled", false);

 // W3C touch events
 // 0 - disabled, 1 - enabled, 2 - autodetect
-// Enabling it for Windows is tracked by bug 736048.
-#if defined(XP_WIN) || defined(XP_MACOSX)
+#if defined(XP_MACOSX)
+pref("dom.w3c_touch_events.enabled", 0);
+#elif defined(XP_WIN) && !defined(NIGHTLY_BUILD)
 pref("dom.w3c_touch_events.enabled", 0);
 #else
 pref("dom.w3c_touch_events.enabled", 2);
--- a/netwerk/system/linux/nsNotifyAddrListener_Linux.cpp
+++ b/netwerk/system/linux/nsNotifyAddrListener_Linux.cpp
@ -18,7 +18,6 @@
 #include "nsServiceManagerUtils.h"
 #include "nsNotifyAddrListener_Linux.h"
 #include "nsString.h"
-#include "nsAutoPtr.h"
 #include "mozilla/Logging.h"

 #include "mozilla/Services.h"
@ -158,9 +157,6 @@ void nsNotifyAddrListener::OnNetlinkMessage(int aNetlinkSocket)
    int attr_len;
    const struct ifaddrmsg* newifam;

-    // inspired by check_pf.c.
-    nsAutoPtr<char> addr;
-    nsAutoPtr<char> localaddr;

    ssize_t rc = EINTR_RETRY(recv(aNetlinkSocket, buffer, sizeof(buffer), 0));
    if (rc < 0) {
@ -174,6 +170,10 @@ void nsNotifyAddrListener::OnNetlinkMessage(int aNetlinkSocket)

    for (; NLMSG_OK(nlh, netlink_bytes);
         nlh = NLMSG_NEXT(nlh, netlink_bytes)) {
+        char prefixaddr[INET6_ADDRSTRLEN];
+        char localaddr[INET6_ADDRSTRLEN];
+        char* addr = nullptr;
+        prefixaddr[0] = localaddr[0] = '\0';

        if (NLMSG_DONE == nlh->nlmsg_type) {
            break;
@ -194,34 +194,31 @@ void nsNotifyAddrListener::OnNetlinkMessage(int aNetlinkSocket)
            if (attr->rta_type == IFA_ADDRESS) {
                if (newifam->ifa_family == AF_INET) {
                    struct in_addr* in = (struct in_addr*)RTA_DATA(attr);
-                    addr = new char[INET_ADDRSTRLEN];
-                    inet_ntop(AF_INET, in, addr.get(), INET_ADDRSTRLEN);
+                    inet_ntop(AF_INET, in, prefixaddr, INET_ADDRSTRLEN);
                } else {
                    struct in6_addr* in = (struct in6_addr*)RTA_DATA(attr);
-                    addr = new char[INET6_ADDRSTRLEN];
-                    inet_ntop(AF_INET6, in, addr.get(), INET6_ADDRSTRLEN);
+                    inet_ntop(AF_INET6, in, prefixaddr, INET6_ADDRSTRLEN);
                }
            } else if (attr->rta_type == IFA_LOCAL) {
                if (newifam->ifa_family == AF_INET) {
                    struct in_addr* in = (struct in_addr*)RTA_DATA(attr);
-                    localaddr = new char[INET_ADDRSTRLEN];
-                    inet_ntop(AF_INET, in, localaddr.get(), INET_ADDRSTRLEN);
+                    inet_ntop(AF_INET, in, localaddr, INET_ADDRSTRLEN);
                } else {
                    struct in6_addr* in = (struct in6_addr*)RTA_DATA(attr);
-                    localaddr = new char[INET6_ADDRSTRLEN];
-                    inet_ntop(AF_INET6, in, localaddr.get(), INET6_ADDRSTRLEN);
+                    inet_ntop(AF_INET6, in, localaddr, INET6_ADDRSTRLEN);
                }
            }
        }
-        if (localaddr) {
+        if (localaddr[0]) {
            addr = localaddr;
-        }
-        if (!addr) {
+        } else if (prefixaddr[0]) {
+            addr = prefixaddr;
+        } else {
            continue;
        }
        if (nlh->nlmsg_type == RTM_NEWADDR) {
            LOG(("nsNotifyAddrListener::OnNetlinkMessage: a new address "
-                 "- %s.", addr.get()));
+                 "- %s.", addr));
            struct ifaddrmsg* ifam;
            nsCString addrStr;
            addrStr.Assign(addr);
@ -242,16 +239,12 @@ void nsNotifyAddrListener::OnNetlinkMessage(int aNetlinkSocket)
            }
        } else {
            LOG(("nsNotifyAddrListener::OnNetlinkMessage: an address "
-                 "has been deleted - %s.", addr.get()));
+                 "has been deleted - %s.", addr));
            networkChange = true;
            nsCString addrStr;
            addrStr.Assign(addr);
            mAddressInfo.Remove(addrStr);
        }
-
-        // clean it up.
-        localaddr = nullptr;
-        addr = nullptr;
    }

    if (networkChange && mAllowChangedEvent) {
--- a/python/mozbuild/mozbuild/artifacts.py
+++ b/python/mozbuild/mozbuild/artifacts.py
@ -40,6 +40,7 @@ consumers will need to arrange this themselves.

 from __future__ import absolute_import, print_function, unicode_literals

+import collections
 import functools
 import hashlib
 import logging
@ -76,7 +77,6 @@ from mozregression.persist_limit import (
    PersistLimit,
 )

-MAX_CACHED_PARENTS = 100  # Number of parent changesets to cache candidate pushheads for.
 NUM_PUSHHEADS_TO_QUERY_PER_PARENT = 50  # Number of candidate pushheads to cache per parent changeset.

 MAX_CACHED_TASKS = 400  # Number of pushheads to cache Task Cluster task data for.
@ -491,52 +491,32 @@ class CacheManager(object):
    def __exit__(self, type, value, traceback):
        self.dump_cache()

+class TreeCache(CacheManager):
+    '''Map pushhead revisions to trees with tasks/artifacts known to taskcluster.'''

-class PushHeadCache(CacheManager):
-    '''Map parent hg revisions to candidate pushheads.'''
+    def __init__(self, cache_dir, log=None):
+        CacheManager.__init__(self, cache_dir, 'artifact_tree', MAX_CACHED_TASKS, log=log)

-    def __init__(self, hg, cache_dir, log=None):
-        # It's not unusual to pull hundreds of changesets at once, and perhaps
-        # |hg up| back and forth a few times.
-        CacheManager.__init__(self, cache_dir, 'pushheads', MAX_CACHED_PARENTS, log=log)
-        self._hg = hg
+        self._index = taskcluster.Index()

    @cachedmethod(operator.attrgetter('_cache'))
-    def pushheads(self, tree, parent):
+    def artifact_trees(self, rev, trees):
+        # The "trees" argument is intentionally ignored. If this value
+        # changes over time it means a changeset we care about has become
+        # a pushhead on another tree, and our cache may no longer be
+        # valid.
+        rev_ns = 'buildbot.revisions.{rev}'.format(rev=rev)
        try:
-            pushheads = subprocess.check_output([self._hg, 'log',
-                '--template', '{node}\n',
-                '-r', 'last(pushhead("{tree}") and ::"{parent}", {num})'.format(
-                    tree=tree, parent=parent, num=NUM_PUSHHEADS_TO_QUERY_PER_PARENT)])
-            # Filter blank lines.
-            pushheads = [ pushhead for pushhead in pushheads.strip().split('\n') if pushhead ]
-            if pushheads:
-                return pushheads
-        except subprocess.CalledProcessError as e:
-            # We probably don't have the mozext extension installed.
-            ret = subprocess.call([self._hg, 'showconfig', 'extensions.mozext'])
-            if ret:
-                raise Exception('Could not find candidate pushheads.\n\n'
-                                'You need to enable the "mozext" hg extension: '
-                                'see https://developer.mozilla.org/en-US/docs/Artifact_builds')
-            raise e
-
-        # We probably don't have the pushlog database present locally.  Check.
-        tree_pushheads = subprocess.check_output([self._hg, 'log',
-            '--template', '{node}\n',
-            '-r', 'last(pushhead("{tree}"))'.format(tree=tree)])
-        # Filter blank lines.
-        tree_pushheads = [ pushhead for pushhead in tree_pushheads.strip().split('\n') if pushhead ]
-        if tree_pushheads:
-            # Okay, we have some pushheads but no candidates.  This can happen
-            # for legitimate reasons: old revisions with no upstream builds
-            # remaining; or new revisions that don't have upstream builds yet.
+            result = self._index.listNamespaces(rev_ns, {"limit": 10})
+        except Exception:
            return []
+        return [ns['name'] for ns in result['namespaces']]

-        raise Exception('Could not find any pushheads for tree "{tree}".\n\n'
-                        'Try running |hg pushlogsync|; '
-                        'see https://developer.mozilla.org/en-US/docs/Artifact_builds'.format(tree=tree))
-
+    def print_last_item(self, args, sorted_kwargs, result):
+        rev, trees = args
+        self.log(logging.INFO, 'artifact',
+            {'rev': rev},
+            'Last fetched trees for pushhead revision {rev}')

 class TaskCache(CacheManager):
    '''Map candidate pushheads to Task Cluster task IDs and artifact URLs.'''
@ -671,14 +651,84 @@ class Artifacts(object):
                'Unknown job {job}')
            raise KeyError("Unknown job")

-        self._pushhead_cache = PushHeadCache(self._hg, self._cache_dir, log=self._log)
        self._task_cache = TaskCache(self._cache_dir, log=self._log)
        self._artifact_cache = ArtifactCache(self._cache_dir, log=self._log)
+        self._tree_cache = TreeCache(self._cache_dir, log=self._log)
+        # A "tree" according to mozext and an integration branch isn't always
+        # an exact match. For example, pushhead("central") refers to pushheads
+        # with artifacts under the taskcluster namespace "mozilla-central".
+        self._tree_replacements = {
+            'inbound': 'mozilla-inbound',
+            'central': 'mozilla-central',
+        }
+

    def log(self, *args, **kwargs):
        if self._log:
            self._log(*args, **kwargs)

+    def _find_pushheads(self, parent):
+        # Return an ordered dict associating revisions that are pushheads with
+        # trees they are known to be in (starting with the first tree they're
+        # known to be in).
+
+        try:
+            output = subprocess.check_output([
+                self._hg, 'log',
+                '--template', '{node},{join(trees, ",")}\n',
+                '-r', 'last(pushhead({tree}) and ::{parent}, {num})'.format(
+                    tree=self._tree or '', parent=parent, num=NUM_PUSHHEADS_TO_QUERY_PER_PARENT)
+            ])
+        except subprocess.CalledProcessError:
+            # We probably don't have the mozext extension installed.
+            ret = subprocess.call([self._hg, 'showconfig', 'extensions.mozext'])
+            if ret:
+                raise Exception('Could not find pushheads for recent revisions.\n\n'
+                                'You need to enable the "mozext" hg extension: '
+                                'see https://developer.mozilla.org/en-US/docs/Artifact_builds')
+            raise
+
+        rev_trees = collections.OrderedDict()
+        for line in output.splitlines():
+            if not line:
+                continue
+            rev_info = line.split(',')
+            if len(rev_info) == 1:
+                # If pushhead() is true, it would seem "trees" should be
+                # non-empty, but this is defensive.
+                continue
+            rev_trees[rev_info[0]] = tuple(rev_info[1:])
+
+        if not rev_trees:
+            raise Exception('Could not find any candidate pushheads in the last {num} revisions.\n\n'
+                            'Try running |hg pushlogsync|;\n'
+                            'see https://developer.mozilla.org/en-US/docs/Artifact_builds'.format(
+                                num=NUM_PUSHHEADS_TO_QUERY_PER_PARENT))
+
+        return rev_trees
+
+    def find_pushhead_artifacts(self, task_cache, tree_cache, job, pushhead, trees):
+        known_trees = set(tree_cache.artifact_trees(pushhead, trees))
+        if not known_trees:
+            return None
+        # If we ever find a rev that's a pushhead on multiple trees, we want
+        # the most recent one.
+        for tree in reversed(trees):
+            tree = self._tree_replacements.get(tree) or tree
+            if tree not in known_trees:
+                continue
+            try:
+                urls = task_cache.artifact_urls(tree, job, pushhead)
+            except ValueError:
+                continue
+            if urls:
+                self.log(logging.INFO, 'artifact',
+                         {'pushhead': pushhead,
+                          'tree': tree},
+                         'Installing from remote pushhead {pushhead} on {tree}')
+                return urls
+        return None
+
    def install_from_file(self, filename, distdir, install_callback=None):
        self.log(logging.INFO, 'artifact',
            {'filename': filename},
@ -734,35 +784,22 @@ class Artifacts(object):
    def install_from_hg(self, revset, distdir, install_callback=None):
        if not revset:
            revset = '.'
-        if len(revset) != 40:
-            revset = subprocess.check_output([self._hg, 'log', '--template', '{node}\n', '-r', revset]).strip()
-            if len(revset.split('\n')) != 1:
-                raise ValueError('hg revision specification must resolve to exactly one commit')
-
-        self.log(logging.INFO, 'artifact',
-            {'revset': revset},
-            'Installing from local revision {revset}')
-
+        rev_pushheads = self._find_pushheads(revset)
        urls = None
-        with self._task_cache as task_cache, self._pushhead_cache as pushhead_cache:
-            # with blocks handle handle persistence.
-            for pushhead in pushhead_cache.pushheads(self._tree, revset):
+        # with blocks handle handle persistence.
+        with self._task_cache as task_cache, self._tree_cache as tree_cache:
+            while rev_pushheads:
+                rev, trees = rev_pushheads.popitem(last=False)
                self.log(logging.DEBUG, 'artifact',
-                    {'pushhead': pushhead},
-                    'Trying to find artifacts for pushhead {pushhead}.')
-                try:
-                    urls = task_cache.artifact_urls(self._tree, self._job, pushhead)
-                    self.log(logging.INFO, 'artifact',
-                        {'pushhead': pushhead},
-                        'Installing from remote pushhead {pushhead}')
-                    break
-                except ValueError:
-                    pass
-        if urls:
-            for url in urls:
-                if self.install_from_url(url, distdir, install_callback=install_callback):
-                    return 1
-            return 0
+                    {'rev': rev},
+                    'Trying to find artifacts for pushhead {rev}.')
+                urls = self.find_pushhead_artifacts(task_cache, tree_cache,
+                                                    self._job, rev, trees)
+                if urls:
+                    for url in urls:
+                        if self.install_from_url(url, distdir, install_callback=install_callback):
+                            return 1
+                    return 0
        self.log(logging.ERROR, 'artifact',
                 {'revset': revset},
                 'No built artifacts for {revset} found.')
@ -804,6 +841,6 @@ class Artifacts(object):
        self.log(logging.INFO, 'artifact',
            {},
            'Printing cached artifacts and caches.')
-        self._pushhead_cache.print_cache()
+        self._tree_cache.print_cache()
        self._task_cache.print_cache()
        self._artifact_cache.print_cache()
--- a/python/mozbuild/mozbuild/mach_commands.py
+++ b/python/mozbuild/mozbuild/mach_commands.py
@ -1474,23 +1474,21 @@ class PackageFrontend(MachCommandBase):
        artifacts = Artifacts(tree, job, log=self.log, cache_dir=cache_dir, hg=hg)
        return artifacts

-    def _compute_defaults(self, tree=None, job=None):
-        # Firefox front-end developers mostly use fx-team.  Post auto-land, make this central.
-        tree = tree or 'fx-team'
+    def _compute_platform(self, job=None):
        if job:
-            return (tree, job)
+            return job
        if self.substs.get('MOZ_BUILD_APP', '') == 'mobile/android':
            if self.substs['ANDROID_CPU_ARCH'] == 'x86':
-                return tree, 'android-x86'
-            return tree, 'android-api-11'
+                return 'android-x86'
+            return 'android-api-11'
        # TODO: check for 32/64 bit builds.  We'd like to use HAVE_64BIT_BUILD
        # but that relies on the compile environment.
        if self.defines.get('XP_LINUX', False):
-            return tree, 'linux64'
+            return 'linux64'
        if self.defines.get('XP_MACOSX', False):
-            return tree, 'macosx64'
+            return 'macosx64'
        if self.defines.get('XP_WIN', False):
-            return tree, 'win32'
+            return 'win32'
        raise Exception('Cannot determine default tree and job for |mach artifact|!')

    @ArtifactSubCommand('artifact', 'install',
@ -1502,7 +1500,7 @@ class PackageFrontend(MachCommandBase):
        default=None)
    def artifact_install(self, source=None, tree=None, job=None, verbose=False):
        self._set_log_level(verbose)
-        tree, job = self._compute_defaults(tree, job)
+        job = self._compute_platform(job)
        artifacts = self._make_artifacts(tree=tree, job=job)

        manifest_path = mozpath.join(self.topobjdir, '_build_manifests', 'install', 'dist_bin')
@ -1528,7 +1526,7 @@ class PackageFrontend(MachCommandBase):
        'Print the last pre-built artifact installed.')
    def artifact_print_last(self, tree=None, job=None, verbose=False):
        self._set_log_level(verbose)
-        tree, job = self._compute_defaults(tree, job)
+        job = self._compute_platform(job)
        artifacts = self._make_artifacts(tree=tree, job=job)
        artifacts.print_last()
        return 0
@ -1537,7 +1535,7 @@ class PackageFrontend(MachCommandBase):
        'Print local artifact cache for debugging.')
    def artifact_print_cache(self, tree=None, job=None, verbose=False):
        self._set_log_level(verbose)
-        tree, job = self._compute_defaults(tree, job)
+        job = self._compute_platform(job)
        artifacts = self._make_artifacts(tree=tree, job=job)
        artifacts.print_cache()
        return 0
@ -1546,7 +1544,7 @@ class PackageFrontend(MachCommandBase):
        'Delete local artifacts and reset local artifact cache.')
    def artifact_clear_cache(self, tree=None, job=None, verbose=False):
        self._set_log_level(verbose)
-        tree, job = self._compute_defaults(tree, job)
+        job = self._compute_platform(job)
        artifacts = self._make_artifacts(tree=tree, job=job)
        artifacts.clear_cache()
        return 0
--- a/testing/config/external-media-tests-requirements.txt
+++ b/testing/config/external-media-tests-requirements.txt
@ -0,0 +1,3 @@
+-r marionette_requirements.txt
+../external-media-tests/
+../puppeteer/firefox/
--- a/testing/marionette/driver.js
+++ b/testing/marionette/driver.js
@ -223,6 +223,9 @@ GeckoDriver.prototype.sendAsync = function(name, msg, cmdId) {
  let curRemoteFrame = this.curBrowser.frameManager.currentRemoteFrame;
  name = "Marionette:" + name;

+  // TODO(ato): When proxy.AsyncMessageChannel
+  // is used for all chrome <-> content communication
+  // this can be removed.
  if (cmdId) {
    msg.command_id = cmdId;
  }
@ -242,8 +245,8 @@ GeckoDriver.prototype.sendAsync = function(name, msg, cmdId) {
      this.mm.sendAsyncMessage(name + remoteFrameId, msg);
    } catch (e) {
      switch(e.result) {
-        case Components.results.NS_ERROR_FAILURE:
-        case Components.results.NS_ERROR_NOT_INITIALIZED:
+        case Cr.NS_ERROR_FAILURE:
+        case Cr.NS_ERROR_NOT_INITIALIZED:
          throw new NoSuchWindowError();
        default:
          throw new WebDriverError(e.toString());
--- a/testing/marionette/driver/requirements.txt
+++ b/testing/marionette/driver/requirements.txt
@ -1,2 +1,2 @@
-marionette-transport == 1.1.0
+marionette-transport == 1.2.0
 mozrunner >= 6.9
--- a/testing/marionette/error.js
+++ b/testing/marionette/error.js
@ -4,7 +4,7 @@

 "use strict";

-var {interfaces: Ci, utils: Cu} = Components;
+const {interfaces: Ci, utils: Cu} = Components;

 const errors = [
  "ElementNotAccessibleError",
@ -90,15 +90,21 @@ error.stringify = function(err) {
 };

 /**
- * Marshal an Error to a JSON structure.
+ * Marshal a WebDriverError prototype to a JSON dictionary.
 *
- * @param {Error} err
- *     The Error to serialise.
+ * @param {WebDriverError} err
+ *     Error to serialise.
 *
 * @return {Object.<string, Object>}
- *     JSON structure with the keys "error", "message", and "stacktrace".
+ *     JSON dictionary with the keys "error", "message", and "stacktrace".
+ * @throws {TypeError}
+ *     If error type is not serialisable.
 */
 error.toJson = function(err) {
+  if (!error.isWebDriverError(err)) {
+    throw new TypeError(`Unserialisable error type: ${err}`);
+  }
+
  let json = {
    error: err.status,
    message: err.message || null,
@ -107,6 +113,28 @@ error.toJson = function(err) {
  return json;
 };

+/**
+ * Unmarshal a JSON dictionary to a WebDriverError prototype.
+ *
+ * @param {Object.<string, string>} json
+ *     JSON dictionary with the keys "error", "message", and "stacktrace".
+ *
+ * @return {WebDriverError}
+ *     Deserialised error prototype.
+ */
+error.fromJson = function(json) {
+  if (!statusLookup.has(json.error)) {
+    throw new TypeError(`Undeserialisable error type: ${json.error}`);
+  }
+
+  let errCls = statusLookup.get(json.error);
+  let err = new errCls(json.message);
+  if ("stacktrace" in json) {
+    err.stack = json.stacktrace;
+  }
+  return err;
+};
+
 /**
 * WebDriverError is the prototypal parent of all WebDriver errors.
 * It should not be used directly, as it does not correspond to a real
@ -297,3 +325,12 @@ this.UnsupportedOperationError = function(msg) {
  this.status = "unsupported operation";
 };
 UnsupportedOperationError.prototype = Object.create(WebDriverError.prototype);
+
+const nameLookup = new Map();
+const statusLookup = new Map();
+for (let s of errors) {
+  let cls = this[s];
+  let inst = new cls();
+  nameLookup.set(inst.name, cls);
+  statusLookup.set(inst.status, cls);
+};
--- a/testing/marionette/listener.js
+++ b/testing/marionette/listener.js
@ -184,7 +184,7 @@ function dispatch(fn) {
      if (typeof rv == "undefined") {
        sendOk(id);
      } else {
-        sendResponse({value: rv}, id);
+        sendResponse(rv, id);
      }
    };

@ -398,42 +398,56 @@ function deleteSession(msg) {
  actions.touchIds = {};
 }

-/*
- * Helper methods
- */
-
 /**
- * Generic method to send a message to the server
+ * Send asynchronous reply to chrome.
+ *
+ * @param {UUID} uuid
+ *     Unique identifier of the request.
+ * @param {AsyncContentSender.ResponseType} type
+ *     Type of response.
+ * @param {?=} data
+ *     JSON serialisable object to accompany the message.  Defaults to
+ *     an empty dictionary.
 */
-function sendToServer(path, data = {}, objs, id) {
-  if (id) {
-    data.command_id = id;
-  }
-  sendAsyncMessage(path, data, objs);
+function sendToServer(uuid, data = undefined) {
+  let channel = new proxy.AsyncMessageChannel(
+      () => this,
+      sendAsyncMessage.bind(this));
+  channel.reply(uuid, data);
 }

 /**
- * Send response back to server
+ * Send asynchronous reply with value to chrome.
+ *
+ * @param {?} obj
+ *     JSON serialisable object of arbitrary type and complexity.
+ * @param {UUID} uuid
+ *     Unique identifier of the request.
 */
-function sendResponse(value, id) {
-  let path = proxy.AsyncContentSender.makeReplyPath(id);
-  sendToServer(path, value, null, id);
+function sendResponse(obj, id) {
+  sendToServer(id, obj);
 }

 /**
- * Send ack back to server
+ * Send asynchronous reply to chrome.
+ *
+ * @param {UUID} uuid
+ *     Unique identifier of the request.
 */
-function sendOk(id) {
-  let path = proxy.AsyncContentSender.makeReplyPath(id);
-  sendToServer(path, {}, null, id);
+function sendOk(uuid) {
+  sendToServer(uuid);
 }

 /**
- * Send error message to server
+ * Send asynchronous error reply to chrome.
+ *
+ * @param {Error} err
+ *     Error to notify chrome of.
+ * @param {UUID} uuid
+ *     Unique identifier of the request.
 */
-function sendError(err, id) {
-  let path = proxy.AsyncContentSender.makeReplyPath(id);
-  sendToServer(path, {error: null}, {error: err}, id);
+function sendError(err, uuid) {
+  sendToServer(uuid, err);
 }

 /**
@ -549,7 +563,7 @@ function createExecuteContentSandbox(win, timeout) {
          _emu_cbs = {};
          sendError(new WebDriverError("Emulator callback still pending when finish() called"), id);
        } else {
-          sendResponse({value: elementManager.wrapValue(obj)}, id);
+          sendResponse(elementManager.wrapValue(obj), id);
        }
      }

@ -631,7 +645,7 @@ function executeScript(msg, directInject) {
        sendError(new JavaScriptError("Marionette.finish() not called"), asyncTestCommandId);
      }
      else {
-        sendResponse({value: elementManager.wrapValue(res)}, asyncTestCommandId);
+        sendResponse(elementManager.wrapValue(res), asyncTestCommandId);
      }
    }
    else {
@ -657,7 +671,7 @@ function executeScript(msg, directInject) {
      sendSyncMessage("Marionette:shareData",
                      {log: elementManager.wrapValue(marionetteLogObj.getLogs())});
      marionetteLogObj.clearLogs();
-      sendResponse({value: elementManager.wrapValue(res)}, asyncTestCommandId);
+      sendResponse(elementManager.wrapValue(res), asyncTestCommandId);
    }
  } catch (e) {
    let err = new JavaScriptError(
@ -1713,7 +1727,7 @@ function switchToFrame(msg) {
    checkTimer.initWithCallback(checkLoad, 100, Ci.nsITimer.TYPE_ONE_SHOT);
  }

-  sendResponse({value: rv}, command_id);
+  sendResponse(rv, command_id);
 }

 function addCookie(cookie) {
@ -1766,8 +1780,8 @@ function deleteAllCookies() {
 }

 function getAppCacheStatus(msg) {
-  sendResponse({ value: curContainer.frame.applicationCache.status },
-               msg.json.command_id);
+  sendResponse(
+      curContainer.frame.applicationCache.status, msg.json.command_id);
 }

 // emulator callbacks
--- a/testing/marionette/proxy.js
+++ b/testing/marionette/proxy.js
@ -6,6 +6,7 @@

 const {classes: Cc, interfaces: Ci, utils: Cu} = Components;

+Cu.import("chrome://marionette/content/error.js");
 Cu.import("chrome://marionette/content/modal.js");

 this.EXPORTED_SYMBOLS = ["proxy"];
@ -44,20 +45,19 @@ this.proxy = {};
 *     Callback for sending async messages.
 */
 proxy.toListener = function(mmFn, sendAsyncFn) {
-  let sender = new proxy.AsyncContentSender(mmFn, sendAsyncFn);
+  let sender = new proxy.AsyncMessageChannel(mmFn, sendAsyncFn);
  return new Proxy(sender, ownPriorityGetterTrap);
 };

 /**
- * With the AsyncContentSender it is possible to make asynchronous calls
- * to the message listener in a frame script.
+ * Provides a transparent interface between chrome- and content space.
 *
- * The responses from content are expected to be JSON Objects, where an
- * {@code error} key indicates that an error occured, and a {@code value}
- * entry that the operation was successful.  It is the value of the
- * {@code value} key that is returned to the consumer through a promise.
+ * The AsyncMessageChannel is an abstraction of the message manager
+ * IPC architecture allowing calls to be made to any registered message
+ * listener in Marionette.  The {@code #send(...)} method returns a promise
+ * that gets resolved when the message handler calls {@code .reply(...)}.
 */
-proxy.AsyncContentSender = class {
+proxy.AsyncMessageChannel = class {
  constructor(mmFn, sendAsyncFn) {
    this.sendAsync = sendAsyncFn;
    // TODO(ato): Bug 1242595
@ -73,8 +73,14 @@ proxy.AsyncContentSender = class {
  }

  /**
-   * Call registered function in the frame script environment of the
-   * current browsing context's content frame.
+   * Send a message across the channel.  The name of the function to
+   * call must be registered as a message listener.
+   *
+   * Usage:
+   *
+   *     let channel = new AsyncMessageChannel(
+   *         messageManager, sendAsyncMessage.bind(this));
+   *     let rv = yield channel.send("remoteFunction", ["argument"]);
   *
   * @param {string} name
   *     Function to call in the listener, e.g. for the message listener
@ -86,6 +92,10 @@ proxy.AsyncContentSender = class {
   *
   * @return {Promise}
   *     A promise that resolves to the result of the command.
+   * @throws {TypeError}
+   *     If an unsupported reply type is received.
+   * @throws {WebDriverError}
+   *     If an error is returned over the channel.
   */
  send(name, args = []) {
    let uuid = uuidgen.generateUUID().toString();
@ -93,15 +103,27 @@ proxy.AsyncContentSender = class {
    this.activeMessageId = uuid;

    return new Promise((resolve, reject) => {
-      let path = proxy.AsyncContentSender.makeReplyPath(uuid);
+      let path = proxy.AsyncMessageChannel.makePath(uuid);
      let cb = msg => {
        this.activeMessageId = null;
-        if ("error" in msg.json) {
-          reject(msg.objects.error);
-        } else {
-          resolve(msg.json.value);
+
+        switch (msg.json.type) {
+          case proxy.AsyncMessageChannel.ReplyType.Ok:
+          case proxy.AsyncMessageChannel.ReplyType.Value:
+            resolve(msg.json.data);
+            break;
+
+          case proxy.AsyncMessageChannel.ReplyType.Error:
+            let err = error.fromJson(msg.json.data);
+            reject(err);
+            break;
+
+          default:
+            throw new TypeError(
+                `Unknown async response type: ${msg.json.type}`);
        }
      };
+
      this.dialogueObserver_ = (subject, topic) => {
        this.cancelAll();
        resolve();
@ -112,13 +134,80 @@ proxy.AsyncContentSender = class {
      this.addListener_(path, cb);
      modal.addHandler(this.dialogueObserver_);

+      // sendAsync is GeckoDriver#sendAsync
      this.sendAsync(name, marshal(args), uuid);
    });
  }

+  /**
+   * Reply to an asynchronous request.
+   *
+   * Passing an WebDriverError prototype will cause the receiving channel
+   * to throw this error.
+   *
+   * Usage:
+   *
+   *     let channel = proxy.AsyncMessageChannel(
+   *         messageManager, sendAsyncMessage.bind(this));
+   *
+   *     // throws in requester:
+   *     channel.reply(uuid, new WebDriverError());
+   *
+   *     // returns with value:
+   *     channel.reply(uuid, "hello world!");
+   *
+   *     // returns with undefined:
+   *     channel.reply(uuid);
+   *
+   * @param {UUID} uuid
+   *     Unique identifier of the request.
+   * @param {?=} obj
+   *     Message data to reply with.
+   */
+  reply(uuid, obj = undefined) {
+    // TODO(ato): Eventually the uuid will be hidden in the dispatcher
+    // in listener, and passing it explicitly to this function will be
+    // unnecessary.
+    if (typeof obj == "undefined") {
+      this.sendReply_(uuid, proxy.AsyncMessageChannel.ReplyType.Ok);
+    } else if (error.isError(obj)) {
+      let serr = error.toJson(obj);
+      this.sendReply_(uuid, proxy.AsyncMessageChannel.ReplyType.Error, serr);
+    } else {
+      this.sendReply_(uuid, proxy.AsyncMessageChannel.ReplyType.Value, obj);
+    }
+  }
+
+  sendReply_(uuid, type, data = undefined) {
+    let path = proxy.AsyncMessageChannel.makePath(uuid);
+    let msg = {type: type, data: data};
+    // here sendAsync is actually the content frame's
+    // sendAsyncMessage(path, message) global
+    this.sendAsync(path, msg);
+  }
+
+  /**
+   * Produces a path, or a name, for the message listener handler that
+   * listens for a reply.
+   *
+   * @param {UUID} uuid
+   *     Unique identifier of the channel request.
+   *
+   * @return {string}
+   *     Path to be used for nsIMessageListener.addMessageListener.
+   */
+  static makePath(uuid) {
+    return "Marionette:asyncReply:" + uuid;
+  }
+
+  /**
+   * Abort listening for responses, remove all modal dialogue handlers,
+   * and cancel any ongoing requests in the listener.
+   */
  cancelAll() {
    this.removeAllListeners_();
    modal.removeHandler(this.dialogueObserver_);
+    // TODO(ato): It's not ideal to have listener specific behaviour here:
    this.sendAsync("cancelRequest");
  }

@ -146,10 +235,11 @@ proxy.AsyncContentSender = class {
    }
    return ok;
  }
-
-  static makeReplyPath(uuid) {
-    return "Marionette:asyncReply:" + uuid;
-  }
+};
+proxy.AsyncMessageChannel.ReplyType = {
+  Ok: 0,
+  Value: 1,
+  Error: 2,
 };

 /**
--- a/testing/marionette/test_error.js
+++ b/testing/marionette/test_error.js
@ -52,19 +52,40 @@ add_test(function test_stringify() {
 });

 add_test(function test_toJson() {
-  deepEqual({error: "a", message: null, stacktrace: null},
-      error.toJson({status: "a"}));
-  deepEqual({error: "a", message: "b", stacktrace: null},
-      error.toJson({status: "a", message: "b"}));
-  deepEqual({error: "a", message: "b", stacktrace: "c"},
-      error.toJson({status: "a", message: "b", stack: "c"}));
+  Assert.throws(() => error.toJson(new Error()),
+      /Unserialisable error type: [object Error]/);

-  let e1 = new Error("b");
-  deepEqual({error: undefined, message: "b", stacktrace: e1.stack},
+  let e1 = new WebDriverError("a");
+  deepEqual({error: e1.status, message: "a", stacktrace: null},
      error.toJson(e1));
-  let e2 = new WebDriverError("b");
-  deepEqual({error: e2.status, message: "b", stacktrace: null},
-      error.toJson(e2));
+
+  let e2 = new JavaScriptError("first", "second", "third", "fourth");
+  let e2s = error.toJson(e2);
+  equal(e2.status, e2s.error);
+  equal(e2.message, e2s.message);
+  ok(e2s.stacktrace.match(/second/));
+  ok(e2s.stacktrace.match(/third/));
+  ok(e2s.stacktrace.match(/fourth/));
+
+  run_next_test();
+});
+
+add_test(function test_fromJson() {
+  Assert.throws(() => error.fromJson({error: "foo"}),
+      /Undeserialisable error type: foo/);
+  Assert.throws(() => error.fromJson({error: "Error"}),
+      /Undeserialisable error type: Error/);
+  Assert.throws(() => error.fromJson({}),
+      /Undeserialisable error type: undefined/);
+
+  let e1 = new WebDriverError("1");
+  deepEqual(e1, error.fromJson({error: "webdriver error", message: "1"}));
+  let e2 = new InvalidArgumentError("2");
+  deepEqual(e2, error.fromJson({error: "invalid argument", message: "2"}));
+
+  let e3 = new JavaScriptError("first", "second", "third", "fourth");
+  let e3s = error.toJson(e3);
+  deepEqual(e3, error.fromJson(e3s));

  run_next_test();
 });
--- a/testing/mochitest/Makefile.in
+++ b/testing/mochitest/Makefile.in
@ -33,6 +33,7 @@ ifeq ($(OS_ARCH),WINNT)
 TEST_HARNESS_BINS += \
  crashinject$(BIN_SUFFIX) \
  crashinjectdll$(DLL_SUFFIX) \
+  minidumpwriter$(BIN_SUFFIX) \
  $(NULL)
 endif

--- a/testing/mochitest/runtests.py
+++ b/testing/mochitest/runtests.py
@ -57,6 +57,13 @@ from mozrunner.utils import get_stack_fixer_function, test_environment
 from mozscreenshot import dump_screen
 import mozleak

+HAVE_PSUTIL = False
+try:
+    import psutil
+    HAVE_PSUTIL = True
+except ImportError:
+    pass
+
 here = os.path.abspath(os.path.dirname(__file__))


@ -1768,7 +1775,7 @@ class MochitestDesktop(MochitestBase):
        Also attempts to obtain a screenshot before killing the process
        if specified.
        """
-
+        self.log.info("Killing process: %s" % processPID)
        if dump_screen:
            self.dumpScreen(utilityPath)

@ -1776,7 +1783,8 @@ class MochitestDesktop(MochitestBase):
            try:
                minidump_path = os.path.join(self.profile.profile,
                                             'minidumps')
-                mozcrash.kill_and_get_minidump(processPID, minidump_path)
+                mozcrash.kill_and_get_minidump(processPID, minidump_path,
+                                               utilityPath)
            except OSError:
                # https://bugzilla.mozilla.org/show_bug.cgi?id=921509
                self.log.info(
@ -1785,6 +1793,26 @@ class MochitestDesktop(MochitestBase):
        self.log.info("Can't trigger Breakpad, just killing process")
        killPid(processPID, self.log)

+    def extract_child_pids(self, process_log, parent_pid=None):
+        """Parses the given log file for the pids of any processes launched by
+        the main process and returns them as a list.
+        If parent_pid is provided, and psutil is available, returns children of
+        parent_pid according to psutil.
+        """
+        if parent_pid and HAVE_PSUTIL:
+            self.log.info("Determining child pids from psutil")
+            return [p.pid for p in psutil.Process(parent_pid).children()]
+
+        rv = []
+        pid_re = re.compile(r'==> process \d+ launched child process (\d+)')
+        with open(process_log) as fd:
+            for line in fd:
+                self.log.info(line.rstrip())
+                m = pid_re.search(line)
+                if m:
+                    rv.append(int(m.group(1)))
+        return rv
+
    def checkForZombies(self, processLog, utilityPath, debuggerInfo):
        """Look for hung processes"""

@ -1798,15 +1826,7 @@ class MochitestDesktop(MochitestBase):

        # scan processLog for zombies
        self.log.info('zombiecheck | Reading PID log: %s' % processLog)
-        processList = []
-        pidRE = re.compile(r'launched child process (\d+)$')
-        with open(processLog) as processLogFD:
-            for line in processLogFD:
-                self.log.info(line.rstrip())
-                m = pidRE.search(line)
-                if m:
-                    processList.append(int(m.group(1)))
-
+        processList = self.extract_child_pids(processLog)
        # kill zombies
        foundZombie = False
        for processPID in processList:
@ -1943,7 +1963,8 @@ class MochitestDesktop(MochitestBase):
                    proc,
                    utilityPath,
                    debuggerInfo,
-                    browserProcessId)
+                    browserProcessId,
+                    processLog)
            kp_kwargs = {'kill_on_timeout': False,
                         'cwd': SCRIPT_DIR,
                         'onTimeout': [timeoutHandler]}
@ -2373,29 +2394,44 @@ class MochitestDesktop(MochitestBase):

        return status

-    def handleTimeout(
-            self,
-            timeout,
-            proc,
-            utilityPath,
-            debuggerInfo,
-            browserProcessId):
+    def handleTimeout(self, timeout, proc, utilityPath, debuggerInfo,
+                      browser_pid, processLog):
        """handle process output timeout"""
        # TODO: bug 913975 : _processOutput should call self.processOutputLine
        # one more time one timeout (I think)
        error_message = "TEST-UNEXPECTED-TIMEOUT | %s | application timed out after %d seconds with no output" % (
            self.lastTestSeen, int(timeout))
-
        self.message_logger.dump_buffered()
        self.message_logger.buffering = False
        self.log.info(error_message)

-        browserProcessId = browserProcessId or proc.pid
-        self.killAndGetStack(
-            browserProcessId,
-            utilityPath,
-            debuggerInfo,
-            dump_screen=not debuggerInfo)
+        browser_pid = browser_pid or proc.pid
+        child_pids = self.extract_child_pids(processLog, browser_pid)
+        self.log.info('Found child pids: %s' % child_pids)
+
+        if HAVE_PSUTIL:
+            child_procs = [psutil.Process(pid) for pid in child_pids]
+            for pid in child_pids:
+                self.killAndGetStack(pid, utilityPath, debuggerInfo,
+                                     dump_screen=not debuggerInfo)
+            gone, alive = psutil.wait_procs(child_procs, timeout=30)
+            for p in gone:
+                self.log.info('psutil found pid %s dead' % p.pid)
+            for p in alive:
+                self.log.warning('failed to kill pid %d after 30s' %
+                                 p.pid)
+        else:
+            self.log.error("psutil not available! Will wait 30s before "
+                           "attempting to kill parent process. This should "
+                           "not occur in mozilla automation. See bug 1143547.")
+            for pid in child_pids:
+                self.killAndGetStack(pid, utilityPath, debuggerInfo,
+                                     dump_screen=not debuggerInfo)
+            if child_pids:
+                time.sleep(30)
+
+        self.killAndGetStack(browser_pid, utilityPath, debuggerInfo,
+                             dump_screen=not debuggerInfo)

    class OutputHandler(object):

--- a/testing/mozbase/mozcrash/mozcrash/mozcrash.py
+++ b/testing/mozbase/mozcrash/mozcrash/mozcrash.py
@ -364,7 +364,7 @@ if mozinfo.isWin:
    OpenProcess = kernel32.OpenProcess
    CloseHandle = kernel32.CloseHandle

-    def write_minidump(pid, dump_directory):
+    def write_minidump(pid, dump_directory, utility_path):
        """
        Write a minidump for a process.

@ -379,13 +379,38 @@ if mozinfo.isWin:
        FILE_ATTRIBUTE_NORMAL = 0x80
        INVALID_HANDLE_VALUE = -1

+        file_name = os.path.join(dump_directory,
+                                 str(uuid.uuid4()) + ".dmp")
+
+        if (mozinfo.info['bits'] != ctypes.sizeof(ctypes.c_voidp) * 8 and
+            utility_path):
+            # We're not going to be able to write a minidump with ctypes if our
+            # python process was compiled for a different architecture than
+            # firefox, so we invoke the minidumpwriter utility program.
+
+            log = get_logger()
+            minidumpwriter = os.path.normpath(os.path.join(utility_path,
+                                                           "minidumpwriter.exe"))
+            log.info("Using %s to write a dump to %s for [%d]" %
+                     (minidumpwriter, file_name, pid))
+            if not os.path.exists(minidumpwriter):
+                log.error("minidumpwriter not found in %s" % utility_path)
+                return
+
+            if isinstance(file_name, unicode):
+                # Convert to a byte string before sending to the shell.
+                file_name = file_name.encode(sys.getfilesystemencoding())
+
+            status = subprocess.Popen([minidumpwriter, str(pid), file_name]).wait()
+            if status:
+                log.error("minidumpwriter exited with status: %d" % status)
+            return
+
        proc_handle = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,
                                  0, pid)
        if not proc_handle:
            return

-        file_name = os.path.join(dump_directory,
-                                 str(uuid.uuid4()) + ".dmp")
        if not isinstance(file_name, unicode):
            # Convert to unicode explicitly so our path will be valid as input
            # to CreateFileW
@ -433,7 +458,7 @@ else:
        """
        os.kill(pid, signal.SIGKILL)

-def kill_and_get_minidump(pid, dump_directory=None):
+def kill_and_get_minidump(pid, dump_directory, utility_path=None):
    """
    Attempt to kill a process and leave behind a minidump describing its
    execution state.
@ -453,7 +478,7 @@ def kill_and_get_minidump(pid, dump_directory=None):
    """
    needs_killing = True
    if mozinfo.isWin:
-        write_minidump(pid, dump_directory)
+        write_minidump(pid, dump_directory, utility_path)
    elif mozinfo.isLinux or mozinfo.isMac:
        os.kill(pid, signal.SIGABRT)
        needs_killing = False
--- a/testing/mozharness/configs/mediatests/buildbot_posix_config.py
+++ b/testing/mozharness/configs/mediatests/buildbot_posix_config.py
@ -12,7 +12,6 @@ config = {
        'python': '/tools/buildbot/bin/python',
        'virtualenv': ['/tools/buildbot/bin/python', '/tools/misc-python/virtualenv.py'],
        'tooltool.py': "/tools/tooltool.py",
-        'gittool.py': os.path.join(external_tools_path, 'gittool.py'),
    },

    "find_links": [
@ -26,7 +25,6 @@ config = {
    "default_actions": [
        'clobber',
        'read-buildbot-config',
-        'checkout',
        'download-and-extract',
        'create-virtualenv',
        'install',
@ -39,10 +37,6 @@ config = {
    "download_minidump_stackwalk": True,
    "download_symbols": "ondemand",

-    "firefox_media_repo": 'https://github.com/mjzffr/firefox-media-tests.git',
-    "firefox_media_branch": 'master',
-    "firefox_media_rev": '0830e972e4b95fef3507207fc6bce028da27f2d3',
-
    "suite_definitions": {
        "media-tests": {
            "options": [],
--- a/testing/mozharness/configs/mediatests/buildbot_windows_config.py
+++ b/testing/mozharness/configs/mediatests/buildbot_windows_config.py
@ -17,8 +17,6 @@ config = {
        'mozinstall': ['%s/build/venv/scripts/python' % os.getcwd(),
                       '%s/build/venv/scripts/mozinstall-script.py' % os.getcwd()],
        'tooltool.py': [sys.executable, 'C:/mozilla-build/tooltool.py'],
-        'gittool.py': [sys.executable,
-                       os.path.join(external_tools_path, 'gittool.py')],
        'hgtool.py': [sys.executable,
                      os.path.join(external_tools_path, 'hgtool.py')],

@ -36,7 +34,6 @@ config = {
    "default_actions": [
        'clobber',
        'read-buildbot-config',
-        'checkout',
        'download-and-extract',
        'create-virtualenv',
        'install',
@ -50,10 +47,6 @@ config = {
    "download_minidump_stackwalk": True,
    "download_symbols": "ondemand",

-    "firefox_media_repo": 'https://github.com/mjzffr/firefox-media-tests.git',
-    "firefox_media_branch": 'master',
-    "firefox_media_rev": '0830e972e4b95fef3507207fc6bce028da27f2d3',
-
    "suite_definitions": {
        "media-tests": {
            "options": [],
--- a/testing/mozharness/configs/mediatests/jenkins_config.py
+++ b/testing/mozharness/configs/mediatests/jenkins_config.py
@ -26,10 +26,6 @@ config = {
    'download_symbols': 'ondemand',
    'download_tooltool': True,

-    # Version control information
-    'firefox_media_repo': 'https://github.com/mjzffr/firefox-media-tests.git',
-    'firefox_media_branch': 'master',
-
    # Default test suite
    'test_suite': 'media-tests',

@ -46,7 +42,6 @@ config = {

    'default_actions': [
        'clobber',
-        'checkout',
        'download-and-extract',
        'create-virtualenv',
        'install',
@ -55,18 +50,3 @@ config = {

 }

-# General local variable overwrite
-# Bug 1227079 - Python executable eeded to get it executed on Windows
-if platform.system() == 'windows':
-    gittool = [
-        sys.executable,
-        os.path.join(external_tools_path, 'gittool.py')
-    ]
-else:
-    gittool = os.path.join(external_tools_path, 'gittool.py')
-
-exes = {
-    'gittool.py' : gittool,
-}
-
-config['exes'] = exes
--- a/testing/mozharness/mozharness/mozilla/testing/firefox_media_tests.py
+++ b/testing/mozharness/mozharness/mozilla/testing/firefox_media_tests.py
@ -57,20 +57,6 @@ media_test_config_options = [
      "default": False,
      "help": "Enable e10s when running marionette tests."
      }],
-    [['--firefox-media-repo'], {
-        'dest': 'firefox_media_repo',
-        'default': 'https://github.com/mjzffr/firefox-media-tests.git',
-        'help': 'which firefox_media_tests repo to use',
-    }],
-    [['--firefox-media-branch'], {
-        'dest': 'firefox_media_branch',
-        'default': 'master',
-        'help': 'which branch to use for firefox_media_tests',
-    }],
-    [['--firefox-media-rev'], {
-        'dest': 'firefox_media_rev',
-        'help': 'which firefox_media_tests revision to use',
-    }],
    [["--suite"],
     {"action": "store",
      "dest": "test_suite",
@ -127,7 +113,6 @@ class FirefoxMediaTestsBase(TestingMixin, VCSToolsScript):
        self.config_options = media_test_config_options + (config_options or [])
        actions = [
            'clobber',
-            'checkout',
            'download-and-extract',
            'create-virtualenv',
            'install',
@ -155,72 +140,60 @@ class FirefoxMediaTestsBase(TestingMixin, VCSToolsScript):
    @PreScriptAction('create-virtualenv')
    def _pre_create_virtualenv(self, action):
        dirs = self.query_abs_dirs()
-        marionette_requirements = os.path.join(dirs['abs_test_install_dir'],
-                                    'config',
-                                    'marionette_requirements.txt')
-        if os.access(marionette_requirements, os.F_OK):
-            self.register_virtualenv_module(requirements=[marionette_requirements],
-                                            two_pass=True)

-        media_tests_requirements = os.path.join(dirs['firefox_media_dir'],
-                                         'requirements.txt')
+        media_tests_requirements = os.path.join(dirs['abs_test_install_dir'],
+                                                'config',
+                                                'external-media-tests-requirements.txt')

        if os.access(media_tests_requirements, os.F_OK):
            self.register_virtualenv_module(requirements=[media_tests_requirements],
                                            two_pass=True)

    def download_and_extract(self):
-        """Overriding method from TestingMixin until firefox-media-tests are in tree.
+        """Overriding method from TestingMixin for more specific behavior.

-        Right now we only care about the installer and symbolds.
+        We use the test_packages_url command line argument to check where to get the
+        harness, puppeteer, and tests from and how to set them up.

        """
-        self._download_installer()
-
-        if self.config.get('download_symbols'):
-            self._download_and_extract_symbols()
+        target_unzip_dirs = ['config/*',
+                             'external-media-tests/*',
+                             'marionette/*',
+                             'mozbase/*',
+                             'puppeteer/*',
+                             'tools/wptserve/*',
+                             ]
+        super(FirefoxMediaTestsBase, self).download_and_extract(
+                target_unzip_dirs=target_unzip_dirs)

    def query_abs_dirs(self):
        if self.abs_dirs:
            return self.abs_dirs
        abs_dirs = super(FirefoxMediaTestsBase, self).query_abs_dirs()
        dirs = {
-            'firefox_media_dir': os.path.join(abs_dirs['abs_work_dir'],
-                                              'firefox-media-tests')
-        }
-        dirs['abs_test_install_dir'] = os.path.join(abs_dirs['abs_work_dir'],
+            'abs_test_install_dir' : os.path.join(abs_dirs['abs_work_dir'],
                                                    'tests')
+        }
+        dirs['external-media-tests'] = os.path.join(dirs['abs_test_install_dir'],
+                                                    'external-media-tests')
        abs_dirs.update(dirs)
        self.abs_dirs = abs_dirs
        return self.abs_dirs

-    @PreScriptAction('checkout')
-    def _pre_checkout(self, action):
-        super(FirefoxMediaTestsBase, self)._pre_checkout(action)
-        c = self.config
-        dirs = self.query_abs_dirs()
-        self.firefox_media_vc = {
-            'branch': c['firefox_media_branch'],
-            'repo': c['firefox_media_repo'],
-            'dest': dirs['firefox_media_dir'],
-        }
-        if 'firefox-media-rev' in c:
-            self.firefox_media_vc['revision'] = c['firefox_media_rev']
-
-    def checkout(self):
-        self.vcs_checkout(vcs='gittool', **self.firefox_media_vc)
-
    def _query_cmd(self):
        """ Determine how to call firefox-media-tests """
        if not self.binary_path:
            self.fatal("Binary path could not be determined. "
                       "Should be set by default during 'install' action.")
        dirs = self.query_abs_dirs()
-        venv_python_path = self.query_python_path()
-        runner_script = os.path.join(dirs['firefox_media_dir'],
-                                     'media_test_harness',
-                                     'runtests.py')
-        cmd = [venv_python_path, runner_script]
+
+        import external_media_harness.runtests
+
+        cmd = [
+            self.query_python_path(),
+            external_media_harness.runtests.__file__
+        ]
+
        cmd += ['--binary', self.binary_path]
        if self.symbols_path:
            cmd += ['--symbols-path', self.symbols_path]
@ -238,8 +211,8 @@ class FirefoxMediaTestsBase(TestingMixin, VCSToolsScript):
            self.fatal("%s is not defined in the config!" % test_suite)

        test_manifest = None if test_suite != 'media-youtube-tests' else \
-            os.path.join(dirs['firefox_media_dir'],
-                         'firefox_media_tests',
+            os.path.join(dirs['external-media-tests'],
+                         'external_media_tests',
                         'playback', 'youtube', 'manifest.ini')
        config_fmt_args = {
            'test_manifest': test_manifest,
--- a/testing/mozharness/scripts/firefox_media_tests_buildbot.py
+++ b/testing/mozharness/scripts/firefox_media_tests_buildbot.py
@ -37,7 +37,6 @@ class FirefoxMediaTestsBuildbot(FirefoxMediaTestsBase, BlobUploadMixin):
            config_options=config_options,
            all_actions=['clobber',
                         'read-buildbot-config',
-                         'checkout',
                         'download-and-extract',
                         'create-virtualenv',
                         'install',
--- a/testing/mozharness/scripts/firefox_media_tests_jenkins.py
+++ b/testing/mozharness/scripts/firefox_media_tests_jenkins.py
@ -26,7 +26,6 @@ class FirefoxMediaTestsJenkins(FirefoxMediaTestsBase):
    def __init__(self):
        super(FirefoxMediaTestsJenkins, self).__init__(
            all_actions=['clobber',
-                         'checkout',
                         'download-and-extract',
                         'create-virtualenv',
                         'install',
--- a/testing/tools/minidumpwriter/minidumpwriter.cpp
+++ b/testing/tools/minidumpwriter/minidumpwriter.cpp
@ -0,0 +1,59 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+/*
+ * Given a PID and a path to a target file, write a minidump of the
+ * corresponding process in that file. This is taken more or less
+ * verbatim from mozcrash and translated to C++ to avoid problems
+ * writing a minidump of 64 bit Firefox from a 32 bit python.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <windows.h>
+#include <dbghelp.h>
+
+int wmain(int argc, wchar_t** argv)
+{
+  if (argc != 3) {
+    fprintf(stderr, "Usage: minidumpwriter <PID> <DUMP_FILE>\n");
+    return 1;
+  }
+
+  DWORD pid = (DWORD) _wtoi(argv[1]);
+
+  if (pid <= 0) {
+    fprintf(stderr, "Usage: minidumpwriter <PID> <DUMP_FILE>\n");
+    return 1;
+  }
+
+  wchar_t* dumpfile = argv[2];
+  int rv = 1;
+  HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,
+                                0, pid);
+  if (!hProcess) {
+    fprintf(stderr, "Couldn't get handle for %d\n", pid);
+    return rv;
+  }
+
+  HANDLE file = CreateFileW(dumpfile, GENERIC_WRITE, 0, nullptr, CREATE_ALWAYS,
+                            FILE_ATTRIBUTE_NORMAL, nullptr);
+  if (file == INVALID_HANDLE_VALUE) {
+    fprintf(stderr, "Couldn't open dump file at %S\n", dumpfile);
+    CloseHandle(hProcess);
+    return rv;
+  }
+
+  rv = 0;
+  if (!MiniDumpWriteDump(hProcess, pid, file, MiniDumpNormal,
+                         nullptr, nullptr, nullptr)) {
+    fprintf(stderr, "Error 0x%X in MiniDumpWriteDump\n", GetLastError());
+    rv = 1;
+  }
+
+  CloseHandle(file);
+  CloseHandle(hProcess);
+  return rv;
+}
--- a/testing/tools/minidumpwriter/moz.build
+++ b/testing/tools/minidumpwriter/moz.build
@ -0,0 +1,17 @@
+# -*- Mode: python; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+if CONFIG['ENABLE_TESTS'] and CONFIG['CPU_ARCH'] == 'x86_64' and CONFIG['OS_ARCH'] == 'WINNT':
+    Program('minidumpwriter')
+    OS_LIBS += [
+        'dbghelp',
+    ]
+    SOURCES += [
+        'minidumpwriter.cpp',
+    ]
+    USE_STATIC_LIBS = True
+
+NO_PGO = True
--- a/testing/web-platform/tests/old-tests/submission/Microsoft/sandbox/iframe_sandbox_002.htm
+++ b/testing/web-platform/tests/old-tests/submission/Microsoft/sandbox/iframe_sandbox_002.htm
@ -2,18 +2,16 @@
 <html>
 <head>
    <title>HTML5 video with autoplay attribute.</title>
-    <script type="text/javascript" src="/common/media.js"></script>
+    <script src="/common/media.js"></script>
 </head>
 <body>
-    <script type="text/javascript">
-    
-    function do_play(event)
-    {
+    <script>
+    function do_play(event) {
        parent.window.postMessage("play event fired", "*");
    }
-    
+
    document.write(
-        "<video id='video0' src='" + getVideoURI("/media/green-at-15") + "'" + 
+        "<video id='video0' src='" + getVideoURI("/media/green-at-15") + "'" +
        " autoplay onplay='do_play(event);'>"
    );
    </script>
--- a/testing/web-platform/tests/old-tests/submission/Microsoft/sandbox/sandbox_002.htm
+++ b/testing/web-platform/tests/old-tests/submission/Microsoft/sandbox/sandbox_002.htm
@ -2,33 +2,24 @@
 <html>
 <head>
    <title>HTML5 Sandbox: Allow autoplay for HTML5 Video inside iframe with sandbox attribute if sandbox='allow-scripts'.</title>
+    <meta name=timeout content=long>
    <meta content="text/html; charset=UTF-8" http-equiv="Content-Type" />
    <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
-    <link rel="help" href="http://dev.w3.org/html5/spec/Overview.html#sandboxed-automatic-features-browsing-context-flag" />
-    <meta name="assert" content="Allow autoplay for HTML5 Video inside iframe with sandbox attribute if sandbox='allow-scripts'." />
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
 </head>
 <body>
-    <script type="text/javascript">
-    
-        
-        var t = async_test("Allow autoplay for HTML5 Video inside iframe with sandbox attribute if sandbox='allow-scripts'.");
-  
-        function callback(event)
-        {
-            t.step(function(){ 
-                assert_true('sandbox' in document.createElement('iframe')); 
-                assert_equals(event.data, "play event fired");
-            });
-            t.done();
-        }
+    <script>
+      async_test(function (t) {
+        var callback = t.step_func_done(function(event) {
+          assert_true('sandbox' in document.createElement('iframe'));
+          assert_equals(event.data, "play event fired");
+        });

-        var timer = setTimeout(callback, 8000);
        window.addEventListener("message", callback, false);
+      }, "Allow autoplay for HTML5 Video inside iframe with sandbox attribute if sandbox='allow-scripts'.");
    </script>
    <iframe src="iframe_sandbox_002.htm" sandbox="allow-scripts" style="display: none"></iframe>
    <div id=log></div>
 </body>
 </html>
-
--- a/toolkit/components/addoncompat/RemoteAddonsParent.jsm
+++ b/toolkit/components/addoncompat/RemoteAddonsParent.jsm
@ -273,7 +273,7 @@ var AboutProtocolParent = {
      } else {
        channel.loadGroup = null;
      }
-      let stream = channel.open();
+      let stream = channel.open2();
      let data = NetUtil.readInputStreamToString(stream, stream.available(), {});
      return {
        data: data,
--- a/toolkit/components/search/tests/xpcshell/test_json_cache.js
+++ b/toolkit/components/search/tests/xpcshell/test_json_cache.js
@ -53,18 +53,14 @@ function run_test() {
  engineTemplateFile.copyTo(engineFile.parent, "test-search-engine.xml");

  // The list of visibleDefaultEngines needs to match or the cache will be ignored.
-  let chan = NetUtil.ioService.newChannel2("resource://search-plugins/list.txt",
-                                           null, // aOriginCharset
-                                           null, // aBaseURI
-                                           null, // aLoadingNode
-                                           Services.scriptSecurityManager.getSystemPrincipal(),
-                                           null, // aTriggeringPrincipal
-                                           Ci.nsILoadInfo.SEC_NORMAL,
-                                           Ci.nsIContentPolicy.TYPE_OTHER);
+  let chan = NetUtil.newChannel({
+    uri: "resource://search-plugins/list.txt",
+    loadUsingSystemPrincipal: true
+  });
  let visibleDefaultEngines = [];
  let sis = Cc["@mozilla.org/scriptableinputstream;1"].
              createInstance(Ci.nsIScriptableInputStream);
-  sis.init(chan.open());
+  sis.init(chan.open2());
  let list = sis.read(sis.available());
  let names = list.split("\n").filter(n => !!n);
  for (let name of names) {
--- a/toolkit/components/telemetry/Histograms.json
+++ b/toolkit/components/telemetry/Histograms.json
@ -10081,5 +10081,12 @@
    "bug_numbers": [1229961],
    "n_values": 12,
    "description": "Plugin drawing model. 0 when windowed, otherwise NPDrawingModel + 1."
+  },
+  "WEB_NOTIFICATION_REQUEST_PERMISSION_CALLBACK": {
+    "alert_emails": ["push@mozilla.com"],
+    "expires_in_version": "55",
+    "bug_numbers": [1241278],
+    "kind": "boolean",
+    "description": "Usage of the deprecated Notification.requestPermission() callback argument"
  }
 }
--- a/toolkit/modules/Troubleshoot.jsm
+++ b/toolkit/modules/Troubleshoot.jsm
@ -318,6 +318,13 @@ var dataProviders = {
    }
    catch (e) {}

+    let promises = [];
+    // done will be called upon all pending promises being resolved.
+    // add your pending promise to promises when adding new ones.
+    function completed() {
+      Promise.all(promises).then(() => done(data));
+    }
+
    data.numTotalWindows = 0;
    data.numAcceleratedWindows = 0;
    let winEnumer = Services.ww.getWindowEnumerator();
@ -333,7 +340,6 @@ var dataProviders = {
        data.numTotalWindows++;
        data.windowLayerManagerType = winUtils.layerManagerType;
        data.windowLayerManagerRemote = winUtils.layerManagerRemote;
-        data.supportsHardwareH264 = winUtils.supportsHardwareH264Decoding;
      }
      catch (e) {
        continue;
@ -342,6 +348,16 @@ var dataProviders = {
        data.numAcceleratedWindows++;
    }

+    let winUtils = Services.wm.getMostRecentWindow("").
+                   QueryInterface(Ci.nsIInterfaceRequestor).
+                   getInterface(Ci.nsIDOMWindowUtils)
+    data.supportsHardwareH264 = "Unknown";
+    let promise = winUtils.supportsHardwareH264Decoding;
+    promise.then(function(v) {
+      data.supportsHardwareH264 = v;
+    });
+    promises.push(promise);
+
    if (!data.numAcceleratedWindows && gfxInfo) {
      let win = AppConstants.platform == "win";
      let feature = win ? gfxInfo.FEATURE_DIRECT3D_9_LAYERS :
@ -350,7 +366,7 @@ var dataProviders = {
    }

    if (!gfxInfo) {
-      done(data);
+      completed();
      return;
    }

@ -448,7 +464,7 @@ var dataProviders = {
      }
    }

-    done(data);
+    completed();
  },

  javaScript: function javaScript(done) {
--- a/toolkit/modules/UpdateUtils.jsm
+++ b/toolkit/modules/UpdateUtils.jsm
@ -131,16 +131,13 @@ XPCOMUtils.defineLazyGetter(UpdateUtils, "Locale", function() {
  let channel;
  let locale;
  for (let res of ['app', 'gre']) {
-    channel = Services.io.newChannel2("resource://" + res + "/" + FILE_UPDATE_LOCALE,
-                                      null,
-                                      null,
-                                      null,      // aLoadingNode
-                                      Services.scriptSecurityManager.getSystemPrincipal(),
-                                      null,      // aTriggeringPrincipal
-                                      Ci.nsILoadInfo.SEC_NORMAL,
-                                      Ci.nsIContentPolicy.TYPE_INTERNAL_XMLHTTPREQUEST);
+    channel = NetUtil.newChannel({
+      uri: "resource://" + res + "/" + FILE_UPDATE_LOCALE,
+      contentPolicyType: Ci.nsIContentPolicy.TYPE_INTERNAL_XMLHTTPREQUEST,
+      loadUsingSystemPrincipal: true
+    });
    try {
-      let inputStream = channel.open();
+      let inputStream = channel.open2();
      locale = NetUtil.readInputStreamToString(inputStream, inputStream.available());
    } catch(e) {}
    if (locale)
--- a/toolkit/toolkit.mozbuild
+++ b/toolkit/toolkit.mozbuild
@ -172,6 +172,7 @@ if CONFIG['ENABLE_TESTS']:
    DIRS += [
        '/testing/mochitest',
        '/testing/xpcshell',
+        '/testing/tools/minidumpwriter',
        '/testing/tools/screenshot',
        '/testing/profiles',
        '/testing/mozbase',
--- a/widget/PuppetWidget.cpp
+++ b/widget/PuppetWidget.cpp
@ -353,29 +353,6 @@ PuppetWidget::DispatchEvent(WidgetGUIEvent* event, nsEventStatus& aStatus)

 nsEventStatus
 PuppetWidget::DispatchInputEvent(WidgetInputEvent* aEvent)
-{
-  if (!mTabChild) {
-    return nsEventStatus_eIgnore;
-  }
-
-  switch (aEvent->mClass) {
-    case eMouseEventClass:
-      Unused <<
-        mTabChild->SendDispatchMouseEvent(*aEvent->AsMouseEvent());
-      break;
-    case eKeyboardEventClass:
-      Unused <<
-        mTabChild->SendDispatchKeyboardEvent(*aEvent->AsKeyboardEvent());
-      break;
-    default:
-      MOZ_ASSERT_UNREACHABLE("unsupported event type");
-  }
-
-  return nsEventStatus_eIgnore;
-}
-
-nsEventStatus
-PuppetWidget::DispatchAPZAwareEvent(WidgetInputEvent* aEvent)
 {
  if (!AsyncPanZoomEnabled()) {
    nsEventStatus status = nsEventStatus_eIgnore;
@ -392,6 +369,14 @@ PuppetWidget::DispatchAPZAwareEvent(WidgetInputEvent* aEvent)
      Unused <<
        mTabChild->SendDispatchWheelEvent(*aEvent->AsWheelEvent());
      break;
+    case eMouseEventClass:
+      Unused <<
+        mTabChild->SendDispatchMouseEvent(*aEvent->AsMouseEvent());
+      break;
+    case eKeyboardEventClass:
+      Unused <<
+        mTabChild->SendDispatchKeyboardEvent(*aEvent->AsKeyboardEvent());
+      break;
    default:
      MOZ_ASSERT_UNREACHABLE("unsupported event type");
  }
--- a/widget/PuppetWidget.h
+++ b/widget/PuppetWidget.h
@ -132,7 +132,6 @@ public:
                 LayoutDeviceIntPoint* aPoint = nullptr);

  NS_IMETHOD DispatchEvent(WidgetGUIEvent* aEvent, nsEventStatus& aStatus) override;
-  nsEventStatus DispatchAPZAwareEvent(WidgetInputEvent* aEvent) override;
  nsEventStatus DispatchInputEvent(WidgetInputEvent* aEvent) override;
  void SetConfirmedTargetAPZC(uint64_t aInputBlockId,
                              const nsTArray<ScrollableLayerGuid>& aTargets) const override;
--- a/widget/cocoa/nsChildView.mm
+++ b/widget/cocoa/nsChildView.mm
@ -4538,7 +4538,7 @@ NSEvent* gLastDragMouseDownEvent = nil;
  else
    geckoEvent.button = WidgetMouseEvent::eLeftButton;

-  mGeckoChild->DispatchAPZAwareEvent(&geckoEvent);
+  mGeckoChild->DispatchInputEvent(&geckoEvent);
  mBlockedLastMouseDown = NO;

  // XXX maybe call markedTextSelectionChanged:client: here?
@ -4565,7 +4565,7 @@ NSEvent* gLastDragMouseDownEvent = nil;

  // This might destroy our widget (and null out mGeckoChild).
  bool defaultPrevented =
-    (mGeckoChild->DispatchAPZAwareEvent(&geckoEvent) == nsEventStatus_eConsumeNoDefault);
+    (mGeckoChild->DispatchInputEvent(&geckoEvent) == nsEventStatus_eConsumeNoDefault);

  // Check to see if we are double-clicking in the titlebar.
  CGFloat locationInTitlebar = [[self window] frame].size.height - [theEvent locationInWindow].y;
@ -4686,7 +4686,7 @@ NewCGSRegionFromRegion(const LayoutDeviceIntRegion& aRegion,
                              WidgetMouseEvent::eReal);
  [self convertCocoaMouseEvent:theEvent toGeckoEvent:&geckoEvent];

-  mGeckoChild->DispatchAPZAwareEvent(&geckoEvent);
+  mGeckoChild->DispatchInputEvent(&geckoEvent);

  NS_OBJC_END_TRY_ABORT_BLOCK;
 }
@ -4732,7 +4732,7 @@ NewCGSRegionFromRegion(const LayoutDeviceIntRegion& aRegion,
  geckoEvent.button = WidgetMouseEvent::eRightButton;
  geckoEvent.clickCount = [theEvent clickCount];

-  mGeckoChild->DispatchAPZAwareEvent(&geckoEvent);
+  mGeckoChild->DispatchInputEvent(&geckoEvent);
  if (!mGeckoChild)
    return;

@ -4756,7 +4756,7 @@ NewCGSRegionFromRegion(const LayoutDeviceIntRegion& aRegion,
  geckoEvent.clickCount = [theEvent clickCount];

  nsAutoRetainCocoaObject kungFuDeathGrip(self);
-  mGeckoChild->DispatchAPZAwareEvent(&geckoEvent);
+  mGeckoChild->DispatchInputEvent(&geckoEvent);

  NS_OBJC_END_TRY_ABORT_BLOCK;
 }
@ -4840,7 +4840,7 @@ static int32_t RoundUp(double aDouble)
  WidgetWheelEvent wheelEvent(true, msg, mGeckoChild);
  [self convertCocoaMouseWheelEvent:theEvent toGeckoEvent:&wheelEvent];
  mExpectingWheelStop = (msg == eWheelOperationStart);
-  mGeckoChild->DispatchAPZAwareEvent(wheelEvent.AsInputEvent());
+  mGeckoChild->DispatchInputEvent(wheelEvent.AsInputEvent());
 }

 - (void)sendWheelCondition:(BOOL)condition
--- a/widget/gtk/nsWindow.cpp
+++ b/widget/gtk/nsWindow.cpp
@ -2695,7 +2695,7 @@ nsWindow::DispatchMissedButtonReleases(GdkEventCrossing *aGdkEvent)
            WidgetMouseEvent synthEvent(true, eMouseUp, this,
                                        WidgetMouseEvent::eSynthesized);
            synthEvent.button = buttonType;
-            DispatchAPZAwareEvent(&synthEvent);
+            DispatchInputEvent(&synthEvent);
        }
    }
 }
@ -2817,7 +2817,7 @@ nsWindow::OnButtonPressEvent(GdkEventButton *aEvent)
    InitButtonEvent(event, aEvent);
    event.pressure = mLastMotionPressure;

-    DispatchAPZAwareEvent(&event);
+    DispatchInputEvent(&event);

    // right menu click on linux should also pop up a context menu
    if (domButton == WidgetMouseEvent::eRightButton &&
@ -2860,7 +2860,7 @@ nsWindow::OnButtonReleaseEvent(GdkEventButton *aEvent)
    gdk_event_get_axis ((GdkEvent*)aEvent, GDK_AXIS_PRESSURE, &pressure);
    event.pressure = pressure ? pressure : mLastMotionPressure;

-    DispatchAPZAwareEvent(&event);
+    DispatchInputEvent(&event);
    mLastMotionPressure = pressure;
 }

@ -3228,7 +3228,7 @@ nsWindow::OnScrollEvent(GdkEventScroll *aEvent)
    wheelEvent.time = aEvent->time;
    wheelEvent.timeStamp = GetEventTimeStamp(aEvent->time);

-    DispatchAPZAwareEvent(&wheelEvent);
+    DispatchInputEvent(&wheelEvent);
 }

 void
@ -3445,7 +3445,7 @@ nsWindow::OnTouchEvent(GdkEventTouch* aEvent)
        *event.touches.AppendElement() = touch.forget();
    }

-    DispatchAPZAwareEvent(&event);
+    DispatchInputEvent(&event);
    return TRUE;
 }
 #endif
--- a/widget/nsBaseWidget.cpp
+++ b/widget/nsBaseWidget.cpp
@ -1012,14 +1012,13 @@ nsBaseWidget::ProcessUntransformedAPZEvent(WidgetInputEvent* aEvent,
  MOZ_ASSERT(NS_IsMainThread());
  InputAPZContext context(aGuid, aInputBlockId, aApzResponse);

-  // If this is a touch event and APZ has targeted it to an APZC in the root
+  // If this is an event that the APZ has targeted to an APZC in the root
  // process, apply that APZC's callback-transform before dispatching the
  // event. If the event is instead targeted to an APZC in the child process,
  // the transform will be applied in the child process before dispatching
  // the event there (see e.g. TabChild::RecvRealTouchEvent()).
-  // TODO: Do other types of events (than touch) need this?
-  if (aEvent->AsTouchEvent() && aGuid.mLayersId == mCompositorParent->RootLayerTreeId()) {
-    APZCCallbackHelper::ApplyCallbackTransform(*aEvent->AsTouchEvent(), aGuid,
+  if (aGuid.mLayersId == mCompositorParent->RootLayerTreeId()) {
+    APZCCallbackHelper::ApplyCallbackTransform(*aEvent, aGuid,
        GetDefaultScale());
  }

@ -1030,7 +1029,7 @@ nsBaseWidget::ProcessUntransformedAPZEvent(WidgetInputEvent* aEvent,
  UniquePtr<WidgetEvent> original(aEvent->Duplicate());
  DispatchEvent(aEvent, status);

-  if (mAPZC && !context.WasRoutedToChildProcess()) {
+  if (mAPZC && !context.WasRoutedToChildProcess() && aInputBlockId) {
    // EventStateManager did not route the event into the child process.
    // It's safe to communicate to APZ that the event has been processed.
    // TODO: Eventually we'll be able to move the SendSetTargetAPZCNotification
@ -1064,21 +1063,6 @@ nsBaseWidget::ProcessUntransformedAPZEvent(WidgetInputEvent* aEvent,
  return status;
 }

-nsEventStatus
-nsBaseWidget::DispatchInputEvent(WidgetInputEvent* aEvent)
-{
-  if (mAPZC) {
-    nsEventStatus result = mAPZC->ReceiveInputEvent(*aEvent, nullptr, nullptr);
-    if (result == nsEventStatus_eConsumeNoDefault) {
-      return result;
-    }
-  }
-
-  nsEventStatus status;
-  DispatchEvent(aEvent, status);
-  return status;
-}
-
 class DispatchWheelEventOnMainThread : public Task
 {
 public:
@ -1146,7 +1130,7 @@ private:
 };

 nsEventStatus
-nsBaseWidget::DispatchAPZAwareEvent(WidgetInputEvent* aEvent)
+nsBaseWidget::DispatchInputEvent(WidgetInputEvent* aEvent)
 {
  MOZ_ASSERT(NS_IsMainThread());
  if (mAPZC) {
--- a/widget/nsBaseWidget.h
+++ b/widget/nsBaseWidget.h
@ -252,12 +252,8 @@ public:
                          const FrameMetrics::ViewID& aViewId,
                          const CSSRect& aRect,
                          const uint32_t& aFlags) override;
-  // Helper function for dispatching events which are not processed by APZ,
-  // but need to be transformed by APZ.
-  nsEventStatus DispatchInputEvent(mozilla::WidgetInputEvent* aEvent) override;
-
  // Dispatch an event that must be first be routed through APZ.
-  nsEventStatus DispatchAPZAwareEvent(mozilla::WidgetInputEvent* aEvent) override;
+  nsEventStatus DispatchInputEvent(mozilla::WidgetInputEvent* aEvent) override;

  void SetConfirmedTargetAPZC(uint64_t aInputBlockId,
                              const nsTArray<ScrollableLayerGuid>& aTargets) const override;
--- a/widget/nsIWidget.h
+++ b/widget/nsIWidget.h
@ -1415,13 +1415,6 @@ class nsIWidget : public nsISupports {
     * enabled. If invoked in the child process, it is forwarded to the
     * parent process synchronously.
     */
-    virtual nsEventStatus DispatchAPZAwareEvent(mozilla::WidgetInputEvent* aEvent) = 0;
-
-    /**
-     * Dispatches an event that must be transformed by APZ first, but is not
-     * actually handled by APZ. If invoked in the child process, it is
-     * forwarded to the parent process synchronously.
-     */
    virtual nsEventStatus DispatchInputEvent(mozilla::WidgetInputEvent* aEvent) = 0;

    /**
--- a/widget/uikit/nsWindow.mm
+++ b/widget/uikit/nsWindow.mm
@ -185,7 +185,7 @@ private:
        event.refPoint = loc;
        event.touches.AppendElement(t);
    }
-    aWindow->DispatchAPZAwareEvent(&event);
+    aWindow->DispatchInputEvent(&event);
 }

 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
--- a/widget/windows/WinUtils.cpp
+++ b/widget/windows/WinUtils.cpp
@ -531,13 +531,21 @@ WinUtils::SystemScaleFactor()
  // The result of GetDeviceCaps won't change dynamically, as it predates
  // per-monitor DPI and support for on-the-fly resolution changes.
  // Therefore, we only need to look it up once.
-  static int logPixelsY = 0;
-  if (!logPixelsY) {
+  static double systemScale = 0;
+  if (systemScale == 0) {
    HDC screenDC = GetDC(nullptr);
-    logPixelsY = GetDeviceCaps(screenDC, LOGPIXELSY);
+    systemScale = GetDeviceCaps(screenDC, LOGPIXELSY) / 96.0;
    ReleaseDC(nullptr, screenDC);
+
+    if (systemScale == 0) {
+      // Bug 1012487 - This can occur when the Screen DC is used off the
+      // main thread on windows. For now just assume a 100% DPI for this
+      // drawing call.
+      // XXX - fixme!
+      return 1.0;
+    }
  }
-  return logPixelsY / 96.0;
+  return systemScale;
 }

 #ifndef WM_DPICHANGED
@ -601,19 +609,7 @@ WinUtils::LogToPhysFactor(HMONITOR aMonitor)
    return dpiY / 96.0;
  }

-  // The system DPI will never change during the session.
-  HDC hdc = ::GetDC(nullptr);
-  double result = ::GetDeviceCaps(hdc, LOGPIXELSY) / 96.0;
-  ::ReleaseDC(nullptr, hdc);
-
-  if (result == 0) {
-    // Bug 1012487 - This can occur when the Screen DC is used off the
-    // main thread on windows. For now just assume a 100% DPI for this
-    // drawing call.
-    // XXX - fixme!
-    result = 1.0;
-  }
-  return result;
+  return SystemScaleFactor();
 }

 /* static */
--- a/widget/windows/nsWindow.cpp
+++ b/widget/windows/nsWindow.cpp
@ -3928,7 +3928,7 @@ bool nsWindow::DispatchContentCommandEvent(WidgetContentCommandEvent* aEvent)

 bool nsWindow::DispatchWheelEvent(WidgetWheelEvent* aEvent)
 {
-  nsEventStatus status = DispatchAPZAwareEvent(aEvent->AsInputEvent());
+  nsEventStatus status = DispatchInputEvent(aEvent->AsInputEvent());
  return ConvertStatus(status);
 }

@ -4266,7 +4266,7 @@ nsWindow::DispatchMouseEvent(EventMessage aEventMessage, WPARAM wParam,
      }
    }

-    result = ConvertStatus(DispatchAPZAwareEvent(&event));
+    result = ConvertStatus(DispatchInputEvent(&event));

    // Release the widget with NS_IF_RELEASE() just in case
    // the context menu key code in EventListenerManager::HandleEvent()
@ -6507,13 +6507,13 @@ bool nsWindow::OnTouch(WPARAM wParam, LPARAM lParam)
    if (!touchInput.mTimeStamp.IsNull()) {
      // Convert MultiTouchInput to WidgetTouchEvent interface.
      WidgetTouchEvent widgetTouchEvent = touchInput.ToWidgetTouchEvent(this);
-      DispatchAPZAwareEvent(&widgetTouchEvent);
+      DispatchInputEvent(&widgetTouchEvent);
    }
    // Dispatch touch end event if we have one.
    if (!touchEndInput.mTimeStamp.IsNull()) {
      // Convert MultiTouchInput to WidgetTouchEvent interface.
      WidgetTouchEvent widgetTouchEvent = touchEndInput.ToWidgetTouchEvent(this);
-      DispatchAPZAwareEvent(&widgetTouchEvent);
+      DispatchInputEvent(&widgetTouchEvent);
    }
  }

--- a/widget/windows/nsWindowGfx.cpp
+++ b/widget/windows/nsWindowGfx.cpp
@ -32,6 +32,7 @@ using mozilla::plugins::PluginInstanceParent;
 #include "mozilla/gfx/DataSurfaceHelpers.h"
 #include "mozilla/gfx/Tools.h"
 #include "mozilla/RefPtr.h"
+#include "mozilla/UniquePtrExtensions.h"
 #include "nsGfxCIID.h"
 #include "gfxContext.h"
 #include "prmem.h"
@ -69,7 +70,7 @@ using namespace mozilla::plugins;
 *
 **************************************************************/

-static nsAutoPtr<uint8_t>  sSharedSurfaceData;
+static UniquePtr<uint8_t[]> sSharedSurfaceData;
 static IntSize             sSharedSurfaceSize;

 struct IconMetrics {
@ -151,11 +152,11 @@ EnsureSharedSurfaceSize(IntSize size)

  if (!sSharedSurfaceData || (WORDSSIZE(size) > WORDSSIZE(sSharedSurfaceSize))) {
    sSharedSurfaceSize = size;
-    sSharedSurfaceData = nullptr;
-    sSharedSurfaceData = (uint8_t *)malloc(WORDSSIZE(sSharedSurfaceSize) * 4);
+    sSharedSurfaceData =
+      MakeUniqueFallible<uint8_t[]>(WORDSSIZE(sSharedSurfaceSize) * 4);
  }

-  return (sSharedSurfaceData != nullptr);
+  return !sSharedSurfaceData;
 }

 nsIWidgetListener* nsWindow::GetPaintListener()
--- a/xpcom/base/nsAutoPtr.h
+++ b/xpcom/base/nsAutoPtr.h
@ -9,6 +9,7 @@

 #include "nsCOMPtr.h"
 #include "mozilla/RefPtr.h"
+#include "mozilla/TypeTraits.h"

 #include "nsCycleCollectionNoteChild.h"
 #include "mozilla/MemoryReporting.h"
@ -21,6 +22,9 @@ template <class T>
 class nsAutoPtr
 {
 private:
+  static_assert(!mozilla::IsScalar<T>::value, "If you are using "
+                "nsAutoPtr to hold an array, use UniquePtr<T[]> instead");
+
  void**
  begin_assignment()
  {
--- a/xpcom/tests/gtest/TestCloneInputStream.cpp
+++ b/xpcom/tests/gtest/TestCloneInputStream.cpp
@ -13,7 +13,6 @@
 #include "nsStreamUtils.h"
 #include "nsStringStream.h"
 #include "nsComponentManagerUtils.h"
-#include "nsAutoPtr.h"

 TEST(CloneInputStream, InvalidInput)
 {
@ -145,7 +144,7 @@ TEST(CloneInputStream, CloneMultiplexStream)
  testing::ConsumeAndValidateStream(clone, doubled);

  // Stream that has been read should fail.
-  nsAutoPtr<char> buffer(new char[512]);
+  char buffer[512];
  uint32_t read;
  rv = stream->Read(buffer, 512, &read);
  ASSERT_TRUE(NS_SUCCEEDED(rv));
@ -175,7 +174,7 @@ TEST(CloneInputStream, CloneMultiplexStreamPartial)
  }

  // Fail when first stream read, but second hasn't been started.
-  nsAutoPtr<char> buffer(new char[1024]);
+  char buffer[1024];
  uint32_t read;
  nsresult rv = stream->Read(buffer, 1024, &read);
  ASSERT_TRUE(NS_SUCCEEDED(rv));