diff --git a/browser/base/content/aboutDialog.js b/browser/base/content/aboutDialog.js
index 34b466191990..40d2c347506b 100644
--- a/browser/base/content/aboutDialog.js
+++ b/browser/base/content/aboutDialog.js
@@ -52,11 +52,12 @@ function init(aEvent)
 #ifdef MOZ_UPDATER
   gAppUpdater = new appUpdater();
 
-#if MOZ_UPDATE_CHANNEL != release
   let defaults = Services.prefs.getDefaultBranch("");
   let channelLabel = document.getElementById("currentChannel");
+  let currentChannelText = document.getElementById("currentChannelText");
   channelLabel.value = defaults.getCharPref("app.update.channel");
-#endif
+  if (channelLabel.value == "release")
+      currentChannelText.hidden = true;
 #endif
 
 #ifdef XP_MACOSX
diff --git a/browser/base/content/aboutDialog.xul b/browser/base/content/aboutDialog.xul
index fc23aab677c3..5e5f07f46bc1 100644
--- a/browser/base/content/aboutDialog.xul
+++ b/browser/base/content/aboutDialog.xul
@@ -108,12 +108,10 @@
 #endif
           </vbox>
 
-#if MOZ_UPDATE_CHANNEL != release
 #ifdef MOZ_UPDATER
           <description class="text-blurb" id="currentChannelText">
             &channel.description.start;<label id="currentChannel"/>&channel.description.end;
           </description>
-#endif
 #endif
           <vbox id="experimental" hidden="true">
             <description class="text-blurb" id="warningDesc">
diff --git a/mobile/android/base/BrowserApp.java b/mobile/android/base/BrowserApp.java
index 701ea5323b30..e487f90ed3e1 100644
--- a/mobile/android/base/BrowserApp.java
+++ b/mobile/android/base/BrowserApp.java
@@ -18,6 +18,8 @@ import org.mozilla.gecko.AndroidGamepadManager;
 import org.mozilla.gecko.DynamicToolbar.PinReason;
 import org.mozilla.gecko.DynamicToolbar.VisibilityTransition;
 import org.mozilla.gecko.GeckoProfileDirectories.NoMozillaDirectoryException;
+import org.mozilla.gecko.Telemetry;
+import org.mozilla.gecko.TelemetryContract;
 import org.mozilla.gecko.animation.PropertyAnimator;
 import org.mozilla.gecko.animation.ViewHelper;
 import org.mozilla.gecko.db.BrowserContract.Combined;
@@ -485,6 +487,8 @@ abstract public class BrowserApp extends GeckoApp
         if (Intent.ACTION_VIEW.equals(intent.getAction())) {
             // Show the target URL immediately in the toolbar.
             mBrowserToolbar.setTitle(intent.getDataString());
+
+            Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, TelemetryContract.Method.INTENT);
         }
 
         ((GeckoApp.MainLayout) mMainLayout).setTouchEventInterceptor(new HideTabsTouchListener());
@@ -643,6 +647,12 @@ abstract public class BrowserApp extends GeckoApp
                 if (isHomePagerVisible()) {
                     mHomePager.onToolbarFocusChange(hasFocus);
                 }
+
+                if (hasFocus) {
+                    Telemetry.startUISession(TelemetryContract.Session.URLBAR_FOCUSED);
+                } else {
+                    Telemetry.stopUISession(TelemetryContract.Session.URLBAR_FOCUSED);
+                }
             }
         });
 
@@ -751,6 +761,7 @@ abstract public class BrowserApp extends GeckoApp
             String text = Clipboard.getText();
             if (!TextUtils.isEmpty(text)) {
                 Tabs.getInstance().loadUrl(text);
+                Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, TelemetryContract.Method.CONTEXT_MENU);
             }
             return true;
         }
@@ -942,6 +953,9 @@ abstract public class BrowserApp extends GeckoApp
 
         GeckoAppShell.openUriExternal(url, "text/plain", "", "",
                                       Intent.ACTION_SEND, tab.getDisplayTitle());
+
+        // Context: Sharing via chrome list (no explicit session is active)
+        Telemetry.sendUIEvent(TelemetryContract.Event.SHARE, TelemetryContract.Method.LIST);
     }
 
     @Override
@@ -1613,6 +1627,8 @@ abstract public class BrowserApp extends GeckoApp
         // If the URL doesn't look like a search query, just load it.
         if (!StringUtils.isSearchQuery(url, true)) {
             Tabs.getInstance().loadUrl(url, Tabs.LOADURL_USER_ENTERED);
+
+            Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL);
             return;
         }
 
@@ -1638,6 +1654,7 @@ abstract public class BrowserApp extends GeckoApp
                 // using the default search engine.
                 if (TextUtils.isEmpty(keywordUrl)) {
                     Tabs.getInstance().loadUrl(url, Tabs.LOADURL_USER_ENTERED);
+                    Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL);
                     return;
                 }
 
@@ -1646,6 +1663,7 @@ abstract public class BrowserApp extends GeckoApp
                 // Otherwise, construct a search query from the bookmark keyword.
                 final String searchUrl = keywordUrl.replace("%s", URLEncoder.encode(keywordSearch));
                 Tabs.getInstance().loadUrl(searchUrl, Tabs.LOADURL_USER_ENTERED);
+                Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, "", "keyword");
             }
         });
     }
@@ -2538,9 +2556,11 @@ abstract public class BrowserApp extends GeckoApp
             return;
         }
 
-        // Dismiss editing mode if the user is loading a URL from an external app.
         if (Intent.ACTION_VIEW.equals(action)) {
+            // Dismiss editing mode if the user is loading a URL from an external app.
             mBrowserToolbar.cancelEdit();
+
+            Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, TelemetryContract.Method.INTENT);
             return;
         }
 
diff --git a/mobile/android/base/GeckoApp.java b/mobile/android/base/GeckoApp.java
index 082ea86d0ae4..2c40e224f774 100644
--- a/mobile/android/base/GeckoApp.java
+++ b/mobile/android/base/GeckoApp.java
@@ -607,6 +607,9 @@ public abstract class GeckoApp
             } else if (event.equals("Share:Text")) {
                 String text = message.getString("text");
                 GeckoAppShell.openUriExternal(text, "text/plain", "", "", Intent.ACTION_SEND, "");
+
+                // Context: Sharing via chrome list (no explicit session is active)
+                Telemetry.sendUIEvent(TelemetryContract.Event.SHARE, TelemetryContract.Method.LIST);
             } else if (event.equals("Image:SetAs")) {
                 String src = message.getString("url");
                 setImageAs(src);
diff --git a/mobile/android/base/TelemetryContract.java b/mobile/android/base/TelemetryContract.java
index b9f79ecb9602..893ca6f66e39 100644
--- a/mobile/android/base/TelemetryContract.java
+++ b/mobile/android/base/TelemetryContract.java
@@ -30,8 +30,22 @@ public interface TelemetryContract {
         // Set default panel.
         public static final String PANEL_SET_DEFAULT = "setdefault.1";
 
+        // Sharing content.
+        public static final String SHARE = "share.1";
+
         // Sanitizing private data.
         public static final String SANITIZE = "sanitize.1";
+
+        // Saving a resource (reader, bookmark, etc) for viewing later.
+        // Note: Only used in JavaScript for now, but here for completeness.
+        public static final String SAVE = "save.1";
+
+        // Stop holding a resource (reader, bookmark, etc) for viewing later.
+        // Note: Only used in JavaScript for now, but here for completeness.
+        public static final String UNSAVE = "unsave.1";
+
+        // Loading a URL.
+        public static final String LOAD_URL = "loadurl.1";
     }
 
     /**
@@ -39,8 +53,29 @@ public interface TelemetryContract {
      * Telemetry.sendUIEvent() as the "method" parameter.
      */
     public interface Method {
+        // Action triggered from a list.
+        public static final String LIST = "list";
+
+        // Action triggered from a button.
+        public static final String BUTTON = "button";
+
         // Action triggered from a dialog.
         public static final String DIALOG = "dialog";
+
+        // Action occurred via an intent.
+        public static final String INTENT = "intent";
+
+        // Action occurred via a context menu.
+        public static final String CONTEXT_MENU = "contextmenu";
+
+        // Action triggered from a view grid item, like a thumbnail.
+        public static final String GRID_ITEM = "griditem";
+
+        // Action triggered from a view list item, like a row of a list.
+        public static final String LIST_ITEM = "listitem";
+
+        // Action triggered from a suggestion provided to the user.
+        public static final String SUGGESTION = "suggestion";
     }
 
     /**
@@ -54,6 +89,16 @@ public interface TelemetryContract {
         // Started when a user enters a given home panel.
         // Session name is dynamic, encoded as "homepanel.1:<panel_id>"
         public static final String HOME_PANEL = "homepanel.1:";
+
+        // Started when a Reader viewer becomes active in the foreground.
+        // Note: Only used in JavaScript for now, but here for completeness.
+        public static final String READER = "reader.1";
+
+        // URL bar focused.
+        public static final String URLBAR_FOCUSED = "urlbar.1:";
+
+        // Awesomescreen frecency search is active.
+        public static final String FRECENCY = "frecency.1:";
     }
 
     /**
diff --git a/mobile/android/base/home/BookmarksListView.java b/mobile/android/base/home/BookmarksListView.java
index 916237172f9b..c6f74e233c0a 100644
--- a/mobile/android/base/home/BookmarksListView.java
+++ b/mobile/android/base/home/BookmarksListView.java
@@ -8,6 +8,8 @@ package org.mozilla.gecko.home;
 import java.util.EnumSet;
 
 import org.mozilla.gecko.R;
+import org.mozilla.gecko.Telemetry;
+import org.mozilla.gecko.TelemetryContract;
 import org.mozilla.gecko.db.BrowserContract.Bookmarks;
 import org.mozilla.gecko.db.BrowserDB.URLColumns;
 import org.mozilla.gecko.home.HomePager.OnUrlOpenListener;
@@ -91,6 +93,8 @@ public class BookmarksListView extends HomeListView
             // Otherwise, just open the URL
             final String url = cursor.getString(cursor.getColumnIndexOrThrow(URLColumns.URL));
 
+            Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL);
+
             // This item is a TwoLinePageRow, so we allow switch-to-tab.
             getOnUrlOpenListener().onUrlOpen(url, EnumSet.of(OnUrlOpenListener.Flags.ALLOW_SWITCH_TO_TAB));
         }
diff --git a/mobile/android/base/home/BrowserSearch.java b/mobile/android/base/home/BrowserSearch.java
index d7e281f1b66d..61b5bd7af80b 100644
--- a/mobile/android/base/home/BrowserSearch.java
+++ b/mobile/android/base/home/BrowserSearch.java
@@ -11,6 +11,8 @@ import org.mozilla.gecko.PrefsHelper;
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.Tab;
 import org.mozilla.gecko.Tabs;
+import org.mozilla.gecko.Telemetry;
+import org.mozilla.gecko.TelemetryContract;
 import org.mozilla.gecko.db.BrowserDB.URLColumns;
 import org.mozilla.gecko.home.HomePager.OnUrlOpenListener;
 import org.mozilla.gecko.home.SearchEngine;
@@ -220,6 +222,20 @@ public class BrowserSearch extends HomeFragment
         getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
     }
 
+    @Override
+    public void onResume() {
+        super.onResume();
+
+        Telemetry.startUISession(TelemetryContract.Session.FRECENCY);
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+
+        Telemetry.stopUISession(TelemetryContract.Session.FRECENCY);
+    }
+
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         // All list views are styled to look the same with a global activity theme.
@@ -264,6 +280,11 @@ public class BrowserSearch extends HomeFragment
                 final Cursor c = mAdapter.getCursor(position);
                 final String url = c.getString(c.getColumnIndexOrThrow(URLColumns.URL));
 
+                // The "urlbar" and "frecency" sessions can be open at the same time. Use the LIST_ITEM
+                // method to set this LOAD_URL event apart from the case where the user commits what's in
+                // the url bar.
+                Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, TelemetryContract.Method.LIST_ITEM);
+
                 // This item is a TwoLinePageRow, so we allow switch-to-tab.
                 mUrlOpenListener.onUrlOpen(url, EnumSet.of(OnUrlOpenListener.Flags.ALLOW_SWITCH_TO_TAB));
             }
diff --git a/mobile/android/base/home/HomeFragment.java b/mobile/android/base/home/HomeFragment.java
index 40428e203a8d..0ba3194d4bcd 100644
--- a/mobile/android/base/home/HomeFragment.java
+++ b/mobile/android/base/home/HomeFragment.java
@@ -12,6 +12,8 @@ import org.mozilla.gecko.GeckoProfile;
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.ReaderModeUtils;
 import org.mozilla.gecko.Tabs;
+import org.mozilla.gecko.Telemetry;
+import org.mozilla.gecko.TelemetryContract;
 import org.mozilla.gecko.db.BrowserContract.Combined;
 import org.mozilla.gecko.db.BrowserDB;
 import org.mozilla.gecko.favicons.Favicons;
@@ -132,6 +134,9 @@ abstract class HomeFragment extends Fragment {
             } else {
                 GeckoAppShell.openUriExternal(info.url, SHARE_MIME_TYPE, "", "",
                                               Intent.ACTION_SEND, info.getDisplayTitle());
+
+                // Context: Sharing via chrome homepage contextmenu list (home session should be active)
+                Telemetry.sendUIEvent(TelemetryContract.Event.SHARE, TelemetryContract.Method.LIST);
                 return true;
             }
         }
@@ -157,6 +162,8 @@ abstract class HomeFragment extends Fragment {
             if (item.getItemId() == R.id.home_open_private_tab)
                 flags |= Tabs.LOADURL_PRIVATE;
 
+            Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, TelemetryContract.Method.CONTEXT_MENU);
+
             final String url = (info.isInReadingList() ? ReaderModeUtils.getAboutReaderForUrl(info.url) : info.url);
 
             // Some pinned site items have "user-entered" urls. URLs entered in the PinSiteDialog are wrapped in
diff --git a/mobile/android/base/home/LastTabsPanel.java b/mobile/android/base/home/LastTabsPanel.java
index ed4a91b5e76d..821d2de23215 100644
--- a/mobile/android/base/home/LastTabsPanel.java
+++ b/mobile/android/base/home/LastTabsPanel.java
@@ -9,6 +9,8 @@ import org.mozilla.gecko.AboutPages;
 import org.mozilla.gecko.GeckoProfile;
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.SessionParser;
+import org.mozilla.gecko.Telemetry;
+import org.mozilla.gecko.TelemetryContract;
 import org.mozilla.gecko.db.BrowserContract.Combined;
 import org.mozilla.gecko.home.HomePager.OnNewTabsListener;
 
@@ -110,6 +112,8 @@ public class LastTabsPanel extends HomeFragment {
                     return;
                 }
 
+                Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL);
+
                 final String url = c.getString(c.getColumnIndexOrThrow(Combined.URL));
                 mNewTabsListener.onNewTabs(new String[] { url });
             }
@@ -206,6 +210,8 @@ public class LastTabsPanel extends HomeFragment {
             urls[c.getPosition()] = c.getString(c.getColumnIndexOrThrow(Combined.URL));
         } while (c.moveToNext());
 
+        Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, TelemetryContract.Method.BUTTON);
+
         mNewTabsListener.onNewTabs(urls);
     }
 
diff --git a/mobile/android/base/home/MostRecentPanel.java b/mobile/android/base/home/MostRecentPanel.java
index 40a58f784fa4..9210573141e4 100644
--- a/mobile/android/base/home/MostRecentPanel.java
+++ b/mobile/android/base/home/MostRecentPanel.java
@@ -9,6 +9,8 @@ import java.util.Date;
 import java.util.EnumSet;
 
 import org.mozilla.gecko.R;
+import org.mozilla.gecko.Telemetry;
+import org.mozilla.gecko.TelemetryContract;
 import org.mozilla.gecko.db.BrowserContract.Combined;
 import org.mozilla.gecko.db.BrowserDB;
 import org.mozilla.gecko.db.BrowserDB.URLColumns;
@@ -98,6 +100,8 @@ public class MostRecentPanel extends HomeFragment {
                 final Cursor c = mAdapter.getCursor(position);
                 final String url = c.getString(c.getColumnIndexOrThrow(URLColumns.URL));
 
+                Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL);
+
                 // This item is a TwoLinePageRow, so we allow switch-to-tab.
                 mUrlOpenListener.onUrlOpen(url, EnumSet.of(OnUrlOpenListener.Flags.ALLOW_SWITCH_TO_TAB));
             }
diff --git a/mobile/android/base/home/ReadingListPanel.java b/mobile/android/base/home/ReadingListPanel.java
index 399b37e38953..0700c9bf60ea 100644
--- a/mobile/android/base/home/ReadingListPanel.java
+++ b/mobile/android/base/home/ReadingListPanel.java
@@ -9,6 +9,8 @@ import java.util.EnumSet;
 
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.ReaderModeUtils;
+import org.mozilla.gecko.Telemetry;
+import org.mozilla.gecko.TelemetryContract;
 import org.mozilla.gecko.db.BrowserContract.ReadingListItems;
 import org.mozilla.gecko.db.BrowserDB;
 import org.mozilla.gecko.db.BrowserDB.URLColumns;
@@ -105,6 +107,8 @@ public class ReadingListPanel extends HomeFragment {
                 String url = c.getString(c.getColumnIndexOrThrow(URLColumns.URL));
                 url = ReaderModeUtils.getAboutReaderForUrl(url);
 
+                Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL);
+
                 // This item is a TwoLinePageRow, so we allow switch-to-tab.
                 mUrlOpenListener.onUrlOpen(url, EnumSet.of(OnUrlOpenListener.Flags.ALLOW_SWITCH_TO_TAB));
             }
diff --git a/mobile/android/base/home/SearchEngineRow.java b/mobile/android/base/home/SearchEngineRow.java
index 77458798ee5e..7ff068e430b9 100644
--- a/mobile/android/base/home/SearchEngineRow.java
+++ b/mobile/android/base/home/SearchEngineRow.java
@@ -6,6 +6,8 @@
 package org.mozilla.gecko.home;
 
 import org.mozilla.gecko.R;
+import org.mozilla.gecko.Telemetry;
+import org.mozilla.gecko.TelemetryContract;
 import org.mozilla.gecko.home.BrowserSearch.OnEditSuggestionListener;
 import org.mozilla.gecko.home.BrowserSearch.OnSearchListener;
 import org.mozilla.gecko.home.HomePager.OnUrlOpenListener;
@@ -79,9 +81,16 @@ class SearchEngineRow extends AnimatedHeightLayout {
                 // search for the term.
                 if (v != mUserEnteredView && !StringUtils.isSearchQuery(suggestion, false)) {
                     if (mUrlOpenListener != null) {
+                        Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, TelemetryContract.Method.SUGGESTION, "url");
+
                         mUrlOpenListener.onUrlOpen(suggestion, EnumSet.noneOf(OnUrlOpenListener.Flags.class));
                     }
                 } else if (mSearchListener != null) {
+                    if (v == mUserEnteredView) {
+                        Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, TelemetryContract.Method.SUGGESTION, "user");
+                    } else {
+                        Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, TelemetryContract.Method.SUGGESTION, "engine");
+                    }
                     mSearchListener.onSearch(mSearchEngine, suggestion);
                 }
             }
@@ -135,6 +144,7 @@ class SearchEngineRow extends AnimatedHeightLayout {
     public void performUserEnteredSearch() {
         String searchTerm = getSuggestionTextFromView(mUserEnteredView);
         if (mSearchListener != null) {
+            Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, TelemetryContract.Method.SUGGESTION, "user");
             mSearchListener.onSearch(mSearchEngine, searchTerm);
         }
     }
diff --git a/mobile/android/base/home/TopSitesGridView.java b/mobile/android/base/home/TopSitesGridView.java
index f126ec5e02fa..07f5ed0b7745 100644
--- a/mobile/android/base/home/TopSitesGridView.java
+++ b/mobile/android/base/home/TopSitesGridView.java
@@ -8,6 +8,8 @@ package org.mozilla.gecko.home;
 import java.util.EnumSet;
 
 import org.mozilla.gecko.R;
+import org.mozilla.gecko.Telemetry;
+import org.mozilla.gecko.TelemetryContract;
 import org.mozilla.gecko.ThumbnailHelper;
 import org.mozilla.gecko.db.BrowserDB.URLColumns;
 import org.mozilla.gecko.db.TopSitesCursorWrapper;
@@ -110,6 +112,8 @@ public class TopSitesGridView extends GridView {
                 // If not, navigate to the page given by the url.
                 if (!TextUtils.isEmpty(url)) {
                     if (mUrlOpenListener != null) {
+                        Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, TelemetryContract.Method.GRID_ITEM);
+
                         mUrlOpenListener.onUrlOpen(url, EnumSet.noneOf(OnUrlOpenListener.Flags.class));
                     }
                 } else {
diff --git a/mobile/android/base/home/TopSitesPanel.java b/mobile/android/base/home/TopSitesPanel.java
index b8e31ee07f89..2f66e0d2b9d2 100644
--- a/mobile/android/base/home/TopSitesPanel.java
+++ b/mobile/android/base/home/TopSitesPanel.java
@@ -181,6 +181,8 @@ public class TopSitesPanel extends HomeFragment {
 
                 final String url = c.getString(c.getColumnIndexOrThrow(URLColumns.URL));
 
+                Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, TelemetryContract.Method.LIST_ITEM);
+
                 // This item is a TwoLinePageRow, so we allow switch-to-tab.
                 mUrlOpenListener.onUrlOpen(url, EnumSet.of(OnUrlOpenListener.Flags.ALLOW_SWITCH_TO_TAB));
             }
diff --git a/mobile/android/base/prompts/PromptListAdapter.java b/mobile/android/base/prompts/PromptListAdapter.java
index 945f9b14de1a..a34e5d23cbac 100644
--- a/mobile/android/base/prompts/PromptListAdapter.java
+++ b/mobile/android/base/prompts/PromptListAdapter.java
@@ -1,9 +1,11 @@
 package org.mozilla.gecko.prompts;
 
-import org.mozilla.gecko.menu.MenuItemActionView;
-import org.mozilla.gecko.R;
 import org.mozilla.gecko.GeckoAppShell;
+import org.mozilla.gecko.R;
+import org.mozilla.gecko.Telemetry;
+import org.mozilla.gecko.TelemetryContract;
 import org.mozilla.gecko.gfx.BitmapUtils;
+import org.mozilla.gecko.menu.MenuItemActionView;
 import org.mozilla.gecko.widget.GeckoActionProvider;
 
 import org.json.JSONArray;
@@ -197,6 +199,9 @@ public class PromptListAdapter extends ArrayAdapter<PromptListItem> {
                     @Override
                     public void onIntentSelected(final Intent intent, final int p) {
                         provider.chooseActivity(p);
+
+                        // Context: Sharing via content contextmenu list (no explicit session is active)
+                        Telemetry.sendUIEvent(TelemetryContract.Event.SHARE, TelemetryContract.Method.LIST);
                     }
 
                     @Override
diff --git a/mobile/android/base/tabspanel/RemoteTabsList.java b/mobile/android/base/tabspanel/RemoteTabsList.java
index 655cb0305d49..669e83af8487 100644
--- a/mobile/android/base/tabspanel/RemoteTabsList.java
+++ b/mobile/android/base/tabspanel/RemoteTabsList.java
@@ -19,6 +19,8 @@ import java.util.List;
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.Tabs;
 import org.mozilla.gecko.TabsAccessor;
+import org.mozilla.gecko.Telemetry;
+import org.mozilla.gecko.TelemetryContract;
 
 /**
  * The actual list of synced tabs. This serves as the only child view of {@link RemoteTabsContainer}
@@ -68,6 +70,8 @@ class RemoteTabsList extends ExpandableListView
             return true;
         }
 
+        Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, "", "remote");
+
         Tabs.getInstance().loadUrl(tab.get("url"), Tabs.LOADURL_NEW_TAB);
         autoHidePanel();
         return true;
diff --git a/mobile/android/base/widget/GeckoActionProvider.java b/mobile/android/base/widget/GeckoActionProvider.java
index 6e9fc437e175..6a577243316a 100644
--- a/mobile/android/base/widget/GeckoActionProvider.java
+++ b/mobile/android/base/widget/GeckoActionProvider.java
@@ -5,6 +5,8 @@
 
 package org.mozilla.gecko.widget;
 
+import org.mozilla.gecko.Telemetry;
+import org.mozilla.gecko.TelemetryContract;
 import org.mozilla.gecko.menu.MenuItemActionView;
 
 import android.content.Context;
@@ -194,6 +196,9 @@ public class GeckoActionProvider {
         @Override
         public boolean onMenuItemClick(MenuItem item) {
             chooseActivity(item.getItemId());
+
+            // Context: Sharing via chrome mainmenu list (no explicit session is active)
+            Telemetry.sendUIEvent(TelemetryContract.Event.SHARE, TelemetryContract.Method.LIST);
             return true;
         }
 
@@ -201,6 +206,9 @@ public class GeckoActionProvider {
         public void onClick(View view) {
             Integer index = (Integer) view.getTag();
             chooseActivity(index);
+
+            // Context: Sharing via chrome mainmenu and content contextmenu quickshare (no explicit session is active)
+            Telemetry.sendUIEvent(TelemetryContract.Event.SHARE, TelemetryContract.Method.BUTTON);
         }
     }
 }
diff --git a/mobile/android/chrome/content/aboutReader.js b/mobile/android/chrome/content/aboutReader.js
index 4fdd5d85a6c4..84d5b572ef44 100644
--- a/mobile/android/chrome/content/aboutReader.js
+++ b/mobile/android/chrome/content/aboutReader.js
@@ -7,6 +7,9 @@ let Ci = Components.interfaces, Cc = Components.classes, Cu = Components.utils;
 Cu.import("resource://gre/modules/Services.jsm")
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 
+XPCOMUtils.defineLazyModuleGetter(this, "UITelemetry",
+                                  "resource://gre/modules/UITelemetry.jsm");
+
 XPCOMUtils.defineLazyGetter(window, "gChromeWin", function ()
   window.QueryInterface(Ci.nsIInterfaceRequestor)
     .getInterface(Ci.nsIWebNavigation)
@@ -286,12 +289,18 @@ AboutReader.prototype = {
     this._isReadingListItem = (this._isReadingListItem == 1) ? 0 : 1;
     this._updateToggleButton();
 
+    // Create a relative timestamp for telemetry
+    let uptime = Date.now() - Services.startup.getStartupInfo().linkerInitialized;
+
     if (this._isReadingListItem == 1) {
       gChromeWin.Reader.storeArticleInCache(this._article, function(success) {
         dump("Reader:Add (in reader) success=" + success);
 
-        let result = (success ? gChromeWin.Reader.READER_ADD_SUCCESS :
-            gChromeWin.Reader.READER_ADD_FAILED);
+        let result = gChromeWin.Reader.READER_ADD_FAILED;
+        if (success) {
+          result = gChromeWin.Reader.READER_ADD_SUCCESS;
+          UITelemetry.addEvent("save.1", "button", uptime, "reader");
+        }
 
         let json = JSON.stringify({ fromAboutReader: true, url: this._article.url });
         Services.obs.notifyObservers(null, "Reader:Add", json);
@@ -310,6 +319,8 @@ AboutReader.prototype = {
       // browser.js), sending this message will cause the toggle button to be
       // updated (handled in this file).
       Services.obs.notifyObservers(null, "Reader:Remove", this._article.url);
+
+      UITelemetry.addEvent("unsave.1", "button", uptime, "reader");
     }
   },
 
@@ -322,6 +333,10 @@ AboutReader.prototype = {
       url: this._article.url,
       title: this._article.title
     });
+
+    // Create a relative timestamp for telemetry
+    let uptime = Date.now() - Services.startup.getStartupInfo().linkerInitialized;
+    UITelemetry.addEvent("share.1", "list", uptime);
   },
 
   _setFontSize: function Reader_setFontSize(newFontSize) {
diff --git a/mobile/android/chrome/content/browser.js b/mobile/android/chrome/content/browser.js
index ff1de029709e..d30b37e5ca42 100644
--- a/mobile/android/chrome/content/browser.js
+++ b/mobile/android/chrome/content/browser.js
@@ -7483,15 +7483,22 @@ let Reader = {
       sendMessageToJava({
         type: "Reader:LongClick",
       });
+
+      // Create a relative timestamp for telemetry
+      let uptime = Date.now() - Services.startup.getStartupInfo().linkerInitialized;
+      UITelemetry.addEvent("save.1", "pageaction", uptime, "reader");
     },
   },
 
   updatePageAction: function(tab) {
-    if(this.pageAction.id) {
+    if (this.pageAction.id) {
       NativeWindow.pageactions.remove(this.pageAction.id);
       delete this.pageAction.id;
     }
 
+    // Create a relative timestamp for telemetry
+    let uptime = Date.now() - Services.startup.getStartupInfo().linkerInitialized;
+
     if (tab.readerActive) {
       this.pageAction.id = NativeWindow.pageactions.add({
         title: Strings.browser.GetStringFromName("readerMode.exit"),
@@ -7499,7 +7506,17 @@ let Reader = {
         clickCallback: this.pageAction.readerModeCallback,
         important: true
       });
-    } else if (tab.readerEnabled) {
+
+      // Only start a reader session if the viewer is in the foreground. We do
+      // not track background reader viewers.
+      UITelemetry.startSession("reader.1", uptime);
+      return;
+    }
+
+    // Only stop a reader session if the foreground viewer is not visible.
+    UITelemetry.stopSession("reader.1", "", uptime);
+
+    if (tab.readerEnabled) {
       this.pageAction.id = NativeWindow.pageactions.add({
         title: Strings.browser.GetStringFromName("readerMode.enter"),
         icon: "drawable://reader",
diff --git a/testing/xpcshell/xpcshell_android.ini b/testing/xpcshell/xpcshell_android.ini
index 80dd1b96a8ae..8139cf3755e0 100644
--- a/testing/xpcshell/xpcshell_android.ini
+++ b/testing/xpcshell/xpcshell_android.ini
@@ -39,3 +39,4 @@
 [include:js/xpconnect/tests/unit/xpcshell.ini]
 [include:js/jsd/test/xpcshell.ini]
 [include:security/manager/ssl/tests/unit/xpcshell.ini]
+[include:toolkit/devtools/qrcode/tests/unit/xpcshell.ini]
diff --git a/testing/xpcshell/xpcshell_b2g.ini b/testing/xpcshell/xpcshell_b2g.ini
index b5901cbab44c..c2156263b0f3 100644
--- a/testing/xpcshell/xpcshell_b2g.ini
+++ b/testing/xpcshell/xpcshell_b2g.ini
@@ -9,6 +9,7 @@
 [include:dom/wappush/tests/xpcshell.ini]
 [include:toolkit/devtools/apps/tests/unit/xpcshell.ini]
 [include:toolkit/devtools/debugger/tests/unit/xpcshell.ini]
+[include:toolkit/devtools/qrcode/tests/unit/xpcshell.ini]
 [include:toolkit/devtools/sourcemap/tests/unit/xpcshell.ini]
 [include:toolkit/mozapps/downloads/tests/unit/xpcshell.ini]
 [include:toolkit/mozapps/update/tests/unit_aus_update/xpcshell.ini]
diff --git a/toolkit/components/telemetry/UITelemetry.jsm b/toolkit/components/telemetry/UITelemetry.jsm
index 48f4f10a78a5..185103b9bf7a 100644
--- a/toolkit/components/telemetry/UITelemetry.jsm
+++ b/toolkit/components/telemetry/UITelemetry.jsm
@@ -141,7 +141,6 @@ this.UITelemetry = {
     delete this._activeSessions[aName];
 
     if (!sessionStart) {
-      Services.console.logStringMessage("UITelemetry error: no session [" + aName + "] to stop!");
       return;
     }
 
diff --git a/toolkit/content/license.html b/toolkit/content/license.html
index 824f57dfc7d7..0ce5443896ec 100644
--- a/toolkit/content/license.html
+++ b/toolkit/content/license.html
@@ -113,6 +113,7 @@
       <li><a href="about:license#pbkdf2-sha256">pbkdf2_sha256 License</a></li>
       <li><a href="about:license#praton">praton License</a></li>
       <li><a href="about:license#qcms">qcms License</a></li>
+      <li><a href="about:license#qrcode-generator">QR Code Generator License</a></li>
       <li><a href="about:license#xdg">Red Hat xdg_user_dir_lookup License</a></li>
       <li><a href="about:license#hunspell-ru">Russian Spellchecking Dictionary License</a></li>
       <li><a href="about:license#sctp">SCTP Licenses</a></li>
@@ -3574,6 +3575,35 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 </pre>
 
 
+    <hr>
+
+    <h1><a id="qrcode-generator"></a>QR Code Generator License</h1>
+
+    <p>This license applies to certain files in the directory
+      <span class="path">toolkit/devtools/qrcode/encoder/</span>.</p>
+<pre>
+Copyright (c) 2009 Kazuhiko Arase
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+</pre>
+
+
     <hr>
 
     <h1><a id="xdg"></a>Red Hat xdg_user_dir_lookup License</h1>
diff --git a/toolkit/content/tests/chrome/chrome.ini b/toolkit/content/tests/chrome/chrome.ini
index 5ce088279a82..62ffb81e0fe5 100644
--- a/toolkit/content/tests/chrome/chrome.ini
+++ b/toolkit/content/tests/chrome/chrome.ini
@@ -130,6 +130,8 @@ skip-if = os == "win" # Intermittent failures, bug 919016
 [test_preferences.xul]
 [test_preferences_beforeaccept.xul]
 support-files = window_preferences_beforeaccept.xul
+[test_preferences_onsyncfrompreference.xul]
+support-files = window_preferences_onsyncfrompreference.xul
 [test_progressmeter.xul]
 [test_props.xul]
 [test_radio.xul]
diff --git a/toolkit/content/tests/chrome/test_preferences_onsyncfrompreference.xul b/toolkit/content/tests/chrome/test_preferences_onsyncfrompreference.xul
new file mode 100644
index 000000000000..8a191d97a165
--- /dev/null
+++ b/toolkit/content/tests/chrome/test_preferences_onsyncfrompreference.xul
@@ -0,0 +1,62 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+<!-- 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/.  -->
+<window title="Preferences Window beforeaccept Tests"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script type="application/javascript"
+          src="chrome://mochikit/content/MochiKit/packed.js"/>
+  <script type="application/javascript"
+          src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+  <script type="application/javascript">
+  <![CDATA[
+    const PREFS = ['tests.onsyncfrompreference.pref1',
+                   'tests.onsyncfrompreference.pref2',
+                   'tests.onsyncfrompreference.pref3'];
+
+    SimpleTest.waitForExplicitFinish();
+
+    for (let pref of PREFS) {
+      SpecialPowers.setIntPref(pref, 1);
+    }
+
+    let counter = 0;
+    let prefWindow = openDialog("window_preferences_onsyncfrompreference.xul", "", "", onSync);
+
+    SimpleTest.registerCleanupFunction(() => {
+      for (let pref of PREFS) {
+        SpecialPowers.clearUserPref(pref);
+      }
+      prefWindow.close();
+    });
+
+    // Onsyncfrompreference handler for the prefs
+    function onSync() {
+      for (let pref of PREFS) {
+        // The `value` field of each <preference> element should be initialized by now.
+
+        is(SpecialPowers.getIntPref(pref), prefWindow.document.getElementById(pref).value,
+           "Pref constructor was called correctly")
+      }
+
+      counter++;
+
+      if (counter == PREFS.length) {
+        SimpleTest.finish();
+      }
+      return true;
+    }
+  ]]>
+  </script>
+
+  <body xmlns="http://www.w3.org/1999/xhtml">
+    <p id="display"></p>
+    <div id="content" style="display: none"></div>
+    <pre id="test"></pre>
+  </body>
+
+</window>
diff --git a/toolkit/content/tests/chrome/window_preferences_onsyncfrompreference.xul b/toolkit/content/tests/chrome/window_preferences_onsyncfrompreference.xul
new file mode 100644
index 000000000000..e0366f989523
--- /dev/null
+++ b/toolkit/content/tests/chrome/window_preferences_onsyncfrompreference.xul
@@ -0,0 +1,42 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<!-- 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/.  -->
+<!--
+  XUL Widget Test for preferences window with onsyncfrompreference
+  This test ensures that onsyncfrompreference handlers are called after all the
+  values of the corresponding preference element have been set correctly
+-->
+<prefwindow xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+            title="preferences window"
+            width="300" height="300"
+            windowtype="test:preferences">
+
+  <prefpane id="sample_pane" label="Sample Prefpane">
+    <preferences id="sample_preferences">
+      <preference id="tests.onsyncfrompreference.pref1"
+                  name="tests.onsyncfrompreference.pref1"
+                  type="int"/>
+      <preference id="tests.onsyncfrompreference.pref2"
+                  name="tests.onsyncfrompreference.pref2"
+                  type="int"/>
+      <preference id="tests.onsyncfrompreference.pref3"
+                  name="tests.onsyncfrompreference.pref3"
+                  type="int"/>
+    </preferences>
+  </prefpane>
+  <label>Test Prefpane</label>
+        <checkbox id="check1" label="Label1"
+                preference="tests.onsyncfrompreference.pref1"
+                onsyncfrompreference="return window.arguments[0]();"
+                onsynctopreference="return 1;"/>
+        <checkbox id="check2" label="Label2"
+                preference="tests.onsyncfrompreference.pref2"
+                onsyncfrompreference="return window.arguments[0]();"
+                onsynctopreference="return 1;"/>
+        <checkbox id="check3" label="Label3"
+                preference="tests.onsyncfrompreference.pref3"
+                onsyncfrompreference="return window.arguments[0]();"
+                onsynctopreference="return 1;"/>
+</prefwindow>
diff --git a/toolkit/content/widgets/preferences.xml b/toolkit/content/widgets/preferences.xml
index 2c9a8952fc91..8d8e1a94af47 100644
--- a/toolkit/content/widgets/preferences.xml
+++ b/toolkit/content/widgets/preferences.xml
@@ -30,6 +30,25 @@
 
   <binding id="preferences">
     <implementation implements="nsIObserver">
+      <method name="_constructAfterChildren">
+      <body>
+      <![CDATA[
+      // This method will be called after each one of the child
+      // <preference> elements is constructed. Its purpose is to propagate
+      // the values to the associated form elements
+
+      var elements = this.getElementsByTagName("preference");
+      for (let element of elements) {
+        if (!element._constructed) {
+          return;
+        }
+      }
+      for (let element of elements) {
+        element.updateElements();
+      }
+      ]]>
+      </body>
+      </method>
       <method name="observe">
         <parameter name="aSubject"/>
         <parameter name="aTopic"/>
@@ -101,6 +120,8 @@
     <implementation>
       <constructor>
       <![CDATA[
+        this._constructed = true;
+
         // if the element has been inserted without the name attribute set,
         // we have nothing to do here
         if (!this.name)
@@ -126,18 +147,20 @@
                 preference = parentPrefs[l];
             }
           }
-          this._setValue(preference ? preference.value 
-                                    : this.valueFromPreferences, false);
+
+          // Don't use the value setter here, we don't want updateElements to be prematurely fired.
+          this._value = preference ? preference.value : this.valueFromPreferences;
         }
         else
-          this._setValue(this.valueFromPreferences, false);
+          this._value = this.valueFromPreferences;
+        this.preferences._constructAfterChildren();
       ]]>
       </constructor>
       <destructor>
         this.preferences.rootBranchInternal
             .removeObserver(this.name, this.preferences);
       </destructor>
-      
+      <field name="_constructed">false</field>
       <property name="instantApply">
         <getter>
           return this.getAttribute("instantApply") == "true" || this.preferences.instantApply;
@@ -169,24 +192,19 @@
       <field name="_value">null</field>
       <method name="_setValue">
         <parameter name="aValue"/>
-        <parameter name="aUpdate"/>
         <body>
         <![CDATA[
-          if (aUpdate && this.value !== aValue) {
+          if (this.value !== aValue) {
             this._value = aValue;
             if (this.instantApply)
               this.valueFromPreferences = aValue;
             this.preferences.fireChangedEvent(this);
           }
-          else if (!aUpdate) {
-            this._value = aValue;
-            this.updateElements();
-          }
           return aValue;
         ]]>
         </body>
       </method>
-      <property name="value" onget="return this._value" onset="return this._setValue(val, true);"/>
+      <property name="value" onget="return this._value" onset="return this._setValue(val);"/>
       
       <property name="locked">
         <getter>
diff --git a/toolkit/devtools/moz.build b/toolkit/devtools/moz.build
index a47d05fc6683..e9de77bcd258 100644
--- a/toolkit/devtools/moz.build
+++ b/toolkit/devtools/moz.build
@@ -13,7 +13,8 @@ PARALLEL_DIRS += [
     'apps',
     'styleinspector',
     'acorn',
-    'pretty-fast'
+    'pretty-fast',
+    'qrcode'
 ]
 
 MOCHITEST_CHROME_MANIFESTS += ['tests/mochitest/chrome.ini']
diff --git a/toolkit/devtools/qrcode/encoder/LICENSE b/toolkit/devtools/qrcode/encoder/LICENSE
new file mode 100644
index 000000000000..a93630a3baa1
--- /dev/null
+++ b/toolkit/devtools/qrcode/encoder/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2009 Kazuhiko Arase
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/toolkit/devtools/qrcode/encoder/index.js b/toolkit/devtools/qrcode/encoder/index.js
new file mode 100644
index 000000000000..4ed340c549d4
--- /dev/null
+++ b/toolkit/devtools/qrcode/encoder/index.js
@@ -0,0 +1,1673 @@
+//---------------------------------------------------------------------
+//
+// QR Code Generator for JavaScript
+//
+// Copyright (c) 2009 Kazuhiko Arase
+//
+// URL: http://www.d-project.com/
+//
+// Licensed under the MIT license:
+//	http://www.opensource.org/licenses/mit-license.php
+//
+// The word 'QR Code' is registered trademark of
+// DENSO WAVE INCORPORATED
+//	http://www.denso-wave.com/qrcode/faqpatent-e.html
+//
+//---------------------------------------------------------------------
+
+var qrcode = function() {
+
+	//---------------------------------------------------------------------
+	// qrcode
+	//---------------------------------------------------------------------
+
+	/**
+	 * qrcode
+	 * @param typeNumber 1 to 10
+	 * @param errorCorrectLevel 'L','M','Q','H'
+	 */
+	var qrcode = function(typeNumber, errorCorrectLevel) {
+
+		var PAD0 = 0xEC;
+		var PAD1 = 0x11;
+
+		var _typeNumber = typeNumber;
+		var _errorCorrectLevel = QRErrorCorrectLevel[errorCorrectLevel];
+		var _modules = null;
+		var _moduleCount = 0;
+		var _dataCache = null;
+		var _dataList = new Array();
+
+		var _this = {};
+
+		var makeImpl = function(test, maskPattern) {
+
+			_moduleCount = _typeNumber * 4 + 17;
+			_modules = function(moduleCount) {
+				var modules = new Array(moduleCount);
+				for (var row = 0; row < moduleCount; row += 1) {
+					modules[row] = new Array(moduleCount);
+					for (var col = 0; col < moduleCount; col += 1) {
+						modules[row][col] = null;
+					}
+				}
+				return modules;
+			}(_moduleCount);
+
+			setupPositionProbePattern(0, 0);
+			setupPositionProbePattern(_moduleCount - 7, 0);
+			setupPositionProbePattern(0, _moduleCount - 7);
+			setupPositionAdjustPattern();
+			setupTimingPattern();
+			setupTypeInfo(test, maskPattern);
+
+			if (_typeNumber >= 7) {
+				setupTypeNumber(test);
+			}
+
+			if (_dataCache == null) {
+				_dataCache = createData(_typeNumber, _errorCorrectLevel, _dataList);
+			}
+
+			mapData(_dataCache, maskPattern);
+		};
+
+		var setupPositionProbePattern = function(row, col) {
+
+			for (var r = -1; r <= 7; r += 1) {
+
+				if (row + r <= -1 || _moduleCount <= row + r) continue;
+
+				for (var c = -1; c <= 7; c += 1) {
+
+					if (col + c <= -1 || _moduleCount <= col + c) continue;
+
+					if ( (0 <= r && r <= 6 && (c == 0 || c == 6) )
+							|| (0 <= c && c <= 6 && (r == 0 || r == 6) )
+							|| (2 <= r && r <= 4 && 2 <= c && c <= 4) ) {
+						_modules[row + r][col + c] = true;
+					} else {
+						_modules[row + r][col + c] = false;
+					}
+				}
+			}
+		};
+
+		var getBestMaskPattern = function() {
+
+			var minLostPoint = 0;
+			var pattern = 0;
+
+			for (var i = 0; i < 8; i += 1) {
+
+				makeImpl(true, i);
+
+				var lostPoint = QRUtil.getLostPoint(_this);
+
+				if (i == 0 || minLostPoint > lostPoint) {
+					minLostPoint = lostPoint;
+					pattern = i;
+				}
+			}
+
+			return pattern;
+		};
+
+		var setupTimingPattern = function() {
+
+			for (var r = 8; r < _moduleCount - 8; r += 1) {
+				if (_modules[r][6] != null) {
+					continue;
+				}
+				_modules[r][6] = (r % 2 == 0);
+			}
+
+			for (var c = 8; c < _moduleCount - 8; c += 1) {
+				if (_modules[6][c] != null) {
+					continue;
+				}
+				_modules[6][c] = (c % 2 == 0);
+			}
+		};
+
+		var setupPositionAdjustPattern = function() {
+
+			var pos = QRUtil.getPatternPosition(_typeNumber);
+
+			for (var i = 0; i < pos.length; i += 1) {
+
+				for (var j = 0; j < pos.length; j += 1) {
+
+					var row = pos[i];
+					var col = pos[j];
+
+					if (_modules[row][col] != null) {
+						continue;
+					}
+
+					for (var r = -2; r <= 2; r += 1) {
+
+						for (var c = -2; c <= 2; c += 1) {
+
+							if (r == -2 || r == 2 || c == -2 || c == 2
+									|| (r == 0 && c == 0) ) {
+								_modules[row + r][col + c] = true;
+							} else {
+								_modules[row + r][col + c] = false;
+							}
+						}
+					}
+				}
+			}
+		};
+
+		var setupTypeNumber = function(test) {
+
+			var bits = QRUtil.getBCHTypeNumber(_typeNumber);
+
+			for (var i = 0; i < 18; i += 1) {
+				var mod = (!test && ( (bits >> i) & 1) == 1);
+				_modules[Math.floor(i / 3)][i % 3 + _moduleCount - 8 - 3] = mod;
+			}
+
+			for (var i = 0; i < 18; i += 1) {
+				var mod = (!test && ( (bits >> i) & 1) == 1);
+				_modules[i % 3 + _moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
+			}
+		};
+
+		var setupTypeInfo = function(test, maskPattern) {
+
+			var data = (_errorCorrectLevel << 3) | maskPattern;
+			var bits = QRUtil.getBCHTypeInfo(data);
+
+			// vertical
+			for (var i = 0; i < 15; i += 1) {
+
+				var mod = (!test && ( (bits >> i) & 1) == 1);
+
+				if (i < 6) {
+					_modules[i][8] = mod;
+				} else if (i < 8) {
+					_modules[i + 1][8] = mod;
+				} else {
+					_modules[_moduleCount - 15 + i][8] = mod;
+				}
+			}
+
+			// horizontal
+			for (var i = 0; i < 15; i += 1) {
+
+				var mod = (!test && ( (bits >> i) & 1) == 1);
+
+				if (i < 8) {
+					_modules[8][_moduleCount - i - 1] = mod;
+				} else if (i < 9) {
+					_modules[8][15 - i - 1 + 1] = mod;
+				} else {
+					_modules[8][15 - i - 1] = mod;
+				}
+			}
+
+			// fixed module
+			_modules[_moduleCount - 8][8] = (!test);
+		};
+
+		var mapData = function(data, maskPattern) {
+
+			var inc = -1;
+			var row = _moduleCount - 1;
+			var bitIndex = 7;
+			var byteIndex = 0;
+			var maskFunc = QRUtil.getMaskFunction(maskPattern);
+
+			for (var col = _moduleCount - 1; col > 0; col -= 2) {
+
+				if (col == 6) col -= 1;
+
+				while (true) {
+
+					for (var c = 0; c < 2; c += 1) {
+
+						if (_modules[row][col - c] == null) {
+
+							var dark = false;
+
+							if (byteIndex < data.length) {
+								dark = ( ( (data[byteIndex] >>> bitIndex) & 1) == 1);
+							}
+
+							var mask = maskFunc(row, col - c);
+
+							if (mask) {
+								dark = !dark;
+							}
+
+							_modules[row][col - c] = dark;
+							bitIndex -= 1;
+
+							if (bitIndex == -1) {
+								byteIndex += 1;
+								bitIndex = 7;
+							}
+						}
+					}
+
+					row += inc;
+
+					if (row < 0 || _moduleCount <= row) {
+						row -= inc;
+						inc = -inc;
+						break;
+					}
+				}
+			}
+		};
+
+		var createBytes = function(buffer, rsBlocks) {
+
+			var offset = 0;
+
+			var maxDcCount = 0;
+			var maxEcCount = 0;
+
+			var dcdata = new Array(rsBlocks.length);
+			var ecdata = new Array(rsBlocks.length);
+
+			for (var r = 0; r < rsBlocks.length; r += 1) {
+
+				var dcCount = rsBlocks[r].dataCount;
+				var ecCount = rsBlocks[r].totalCount - dcCount;
+
+				maxDcCount = Math.max(maxDcCount, dcCount);
+				maxEcCount = Math.max(maxEcCount, ecCount);
+
+				dcdata[r] = new Array(dcCount);
+
+				for (var i = 0; i < dcdata[r].length; i += 1) {
+					dcdata[r][i] = 0xff & buffer.getBuffer()[i + offset];
+				}
+				offset += dcCount;
+
+				var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount);
+				var rawPoly = qrPolynomial(dcdata[r], rsPoly.getLength() - 1);
+
+				var modPoly = rawPoly.mod(rsPoly);
+				ecdata[r] = new Array(rsPoly.getLength() - 1);
+				for (var i = 0; i < ecdata[r].length; i += 1) {
+					var modIndex = i + modPoly.getLength() - ecdata[r].length;
+					ecdata[r][i] = (modIndex >= 0)? modPoly.getAt(modIndex) : 0;
+				}
+			}
+
+			var totalCodeCount = 0;
+			for (var i = 0; i < rsBlocks.length; i += 1) {
+				totalCodeCount += rsBlocks[i].totalCount;
+			}
+
+			var data = new Array(totalCodeCount);
+			var index = 0;
+
+			for (var i = 0; i < maxDcCount; i += 1) {
+				for (var r = 0; r < rsBlocks.length; r += 1) {
+					if (i < dcdata[r].length) {
+						data[index] = dcdata[r][i];
+						index += 1;
+					}
+				}
+			}
+
+			for (var i = 0; i < maxEcCount; i += 1) {
+				for (var r = 0; r < rsBlocks.length; r += 1) {
+					if (i < ecdata[r].length) {
+						data[index] = ecdata[r][i];
+						index += 1;
+					}
+				}
+			}
+
+			return data;
+		};
+
+		var createData = function(typeNumber, errorCorrectLevel, dataList) {
+
+			var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);
+
+			var buffer = qrBitBuffer();
+
+			for (var i = 0; i < dataList.length; i += 1) {
+				var data = dataList[i];
+				buffer.put(data.getMode(), 4);
+				buffer.put(data.getLength(), QRUtil.getLengthInBits(data.getMode(), typeNumber) );
+				data.write(buffer);
+			}
+
+			// calc num max data.
+			var totalDataCount = 0;
+			for (var i = 0; i < rsBlocks.length; i += 1) {
+				totalDataCount += rsBlocks[i].dataCount;
+			}
+
+			if (buffer.getLengthInBits() > totalDataCount * 8) {
+				throw new Error('code length overflow. ('
+					+ buffer.getLengthInBits()
+					+ '>'
+					+ totalDataCount * 8
+					+ ')');
+			}
+
+			// end code
+			if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
+				buffer.put(0, 4);
+			}
+
+			// padding
+			while (buffer.getLengthInBits() % 8 != 0) {
+				buffer.putBit(false);
+			}
+
+			// padding
+			while (true) {
+
+				if (buffer.getLengthInBits() >= totalDataCount * 8) {
+					break;
+				}
+				buffer.put(PAD0, 8);
+
+				if (buffer.getLengthInBits() >= totalDataCount * 8) {
+					break;
+				}
+				buffer.put(PAD1, 8);
+			}
+
+			return createBytes(buffer, rsBlocks);
+		};
+
+		_this.addData = function(data) {
+			var newData = qr8BitByte(data);
+			_dataList.push(newData);
+			_dataCache = null;
+		};
+
+		_this.isDark = function(row, col) {
+			if (row < 0 || _moduleCount <= row || col < 0 || _moduleCount <= col) {
+				throw new Error(row + ',' + col);
+			}
+			return _modules[row][col];
+		};
+
+		_this.getModuleCount = function() {
+			return _moduleCount;
+		};
+
+		_this.make = function() {
+			makeImpl(false, getBestMaskPattern() );
+		};
+
+		_this.createTableTag = function(cellSize, margin) {
+
+			cellSize = cellSize || 2;
+			margin = (typeof margin == 'undefined')? cellSize * 4 : margin;
+
+			var qrHtml = '';
+
+			qrHtml += '<table style="';
+			qrHtml += ' border-width: 0px; border-style: none;';
+			qrHtml += ' border-collapse: collapse;';
+			qrHtml += ' padding: 0px; margin: ' + margin + 'px;';
+			qrHtml += '">';
+			qrHtml += '<tbody>';
+
+			for (var r = 0; r < _this.getModuleCount(); r += 1) {
+
+				qrHtml += '<tr>';
+
+				for (var c = 0; c < _this.getModuleCount(); c += 1) {
+					qrHtml += '<td style="';
+					qrHtml += ' border-width: 0px; border-style: none;';
+					qrHtml += ' border-collapse: collapse;';
+					qrHtml += ' padding: 0px; margin: 0px;';
+					qrHtml += ' width: ' + cellSize + 'px;';
+					qrHtml += ' height: ' + cellSize + 'px;';
+					qrHtml += ' background-color: ';
+					qrHtml += _this.isDark(r, c)? '#000000' : '#ffffff';
+					qrHtml += ';';
+					qrHtml += '"/>';
+				}
+
+				qrHtml += '</tr>';
+			}
+
+			qrHtml += '</tbody>';
+			qrHtml += '</table>';
+
+			return qrHtml;
+		};
+
+		_this.createImgTag = function(cellSize, margin) {
+
+			cellSize = cellSize || 2;
+			margin = (typeof margin == 'undefined')? cellSize * 4 : margin;
+
+			var size = _this.getModuleCount() * cellSize + margin * 2;
+			var min = margin;
+			var max = size - margin;
+
+			return createImgTag(size, size, function(x, y) {
+				if (min <= x && x < max && min <= y && y < max) {
+					var c = Math.floor( (x - min) / cellSize);
+					var r = Math.floor( (y - min) / cellSize);
+					return _this.isDark(r, c)? 0 : 1;
+				} else {
+					return 1;
+				}
+			} );
+		};
+
+		_this.createImgData = function(cellSize, margin) {
+
+			cellSize = cellSize || 2;
+			margin = (typeof margin == 'undefined')? cellSize * 4 : margin;
+
+			var size = _this.getModuleCount() * cellSize + margin * 2;
+			var min = margin;
+			var max = size - margin;
+
+			var base64 = createGifData(size, size, function(x, y) {
+				if (min <= x && x < max && min <= y && y < max) {
+					var c = Math.floor( (x - min) / cellSize);
+					var r = Math.floor( (y - min) / cellSize);
+					return _this.isDark(r, c)? 0 : 1;
+				} else {
+					return 1;
+				}
+			} );
+
+                        return {
+                                src: 'data:image/gif;base64,' + base64,
+                                width: size,
+                                height: size
+                        };
+		};
+
+		return _this;
+	};
+
+	//---------------------------------------------------------------------
+	// qrcode.stringToBytes
+	//---------------------------------------------------------------------
+
+	qrcode.stringToBytes = function(s) {
+		var bytes = new Array();
+		for (var i = 0; i < s.length; i += 1) {
+			var c = s.charCodeAt(i);
+			bytes.push(c & 0xff);
+		}
+		return bytes;
+	};
+
+	//---------------------------------------------------------------------
+	// qrcode.createStringToBytes
+	//---------------------------------------------------------------------
+
+	/**
+	 * @param unicodeData base64 string of byte array.
+	 * [16bit Unicode],[16bit Bytes], ...
+	 * @param numChars
+	 */
+	qrcode.createStringToBytes = function(unicodeData, numChars) {
+
+		// create conversion map.
+
+		var unicodeMap = function() {
+
+			var bin = base64DecodeInputStream(unicodeData);
+			var read = function() {
+				var b = bin.read();
+				if (b == -1) throw new Error();
+				return b;
+			};
+
+			var count = 0;
+			var unicodeMap = {};
+			while (true) {
+				var b0 = bin.read();
+				if (b0 == -1) break;
+				var b1 = read();
+				var b2 = read();
+				var b3 = read();
+				var k = String.fromCharCode( (b0 << 8) | b1);
+				var v = (b2 << 8) | b3;
+				unicodeMap[k] = v;
+				count += 1;
+			}
+			if (count != numChars) {
+				throw new Error(count + ' != ' + numChars);
+			}
+
+			return unicodeMap;
+		}();
+
+		var unknownChar = '?'.charCodeAt(0);
+
+		return function(s) {
+			var bytes = new Array();
+			for (var i = 0; i < s.length; i += 1) {
+				var c = s.charCodeAt(i);
+				if (c < 128) {
+					bytes.push(c);
+				} else {
+					var b = unicodeMap[s.charAt(i)];
+					if (typeof b == 'number') {
+						if ( (b & 0xff) == b) {
+							// 1byte
+							bytes.push(b);
+						} else {
+							// 2bytes
+							bytes.push(b >>> 8);
+							bytes.push(b & 0xff);
+						}
+					} else {
+						bytes.push(unknownChar);
+					}
+				}
+			}
+			return bytes;
+		};
+	};
+
+	//---------------------------------------------------------------------
+	// QRMode
+	//---------------------------------------------------------------------
+
+	var QRMode = {
+		MODE_NUMBER :		1 << 0,
+		MODE_ALPHA_NUM : 	1 << 1,
+		MODE_8BIT_BYTE : 	1 << 2,
+		MODE_KANJI :		1 << 3
+	};
+
+	//---------------------------------------------------------------------
+	// QRErrorCorrectLevel
+	//---------------------------------------------------------------------
+
+	var QRErrorCorrectLevel = {
+		L : 1,
+		M : 0,
+		Q : 3,
+		H : 2
+	};
+        exports.QRErrorCorrectLevel = QRErrorCorrectLevel;
+
+	//---------------------------------------------------------------------
+	// QRMaskPattern
+	//---------------------------------------------------------------------
+
+	var QRMaskPattern = {
+		PATTERN000 : 0,
+		PATTERN001 : 1,
+		PATTERN010 : 2,
+		PATTERN011 : 3,
+		PATTERN100 : 4,
+		PATTERN101 : 5,
+		PATTERN110 : 6,
+		PATTERN111 : 7
+	};
+
+	//---------------------------------------------------------------------
+	// QRUtil
+	//---------------------------------------------------------------------
+
+	var QRUtil = function() {
+
+		var PATTERN_POSITION_TABLE = [
+			[],
+			[6, 18],
+			[6, 22],
+			[6, 26],
+			[6, 30],
+			[6, 34],
+			[6, 22, 38],
+			[6, 24, 42],
+			[6, 26, 46],
+			[6, 28, 50],
+			[6, 30, 54],
+			[6, 32, 58],
+			[6, 34, 62],
+			[6, 26, 46, 66],
+			[6, 26, 48, 70],
+			[6, 26, 50, 74],
+			[6, 30, 54, 78],
+			[6, 30, 56, 82],
+			[6, 30, 58, 86],
+			[6, 34, 62, 90],
+			[6, 28, 50, 72, 94],
+			[6, 26, 50, 74, 98],
+			[6, 30, 54, 78, 102],
+			[6, 28, 54, 80, 106],
+			[6, 32, 58, 84, 110],
+			[6, 30, 58, 86, 114],
+			[6, 34, 62, 90, 118],
+			[6, 26, 50, 74, 98, 122],
+			[6, 30, 54, 78, 102, 126],
+			[6, 26, 52, 78, 104, 130],
+			[6, 30, 56, 82, 108, 134],
+			[6, 34, 60, 86, 112, 138],
+			[6, 30, 58, 86, 114, 142],
+			[6, 34, 62, 90, 118, 146],
+			[6, 30, 54, 78, 102, 126, 150],
+			[6, 24, 50, 76, 102, 128, 154],
+			[6, 28, 54, 80, 106, 132, 158],
+			[6, 32, 58, 84, 110, 136, 162],
+			[6, 26, 54, 82, 110, 138, 166],
+			[6, 30, 58, 86, 114, 142, 170]
+		];
+		var G15 = (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0);
+		var G18 = (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0);
+		var G15_MASK = (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1);
+
+		var _this = {};
+
+		var getBCHDigit = function(data) {
+			var digit = 0;
+			while (data != 0) {
+				digit += 1;
+				data >>>= 1;
+			}
+			return digit;
+		};
+
+		_this.getBCHTypeInfo = function(data) {
+			var d = data << 10;
+			while (getBCHDigit(d) - getBCHDigit(G15) >= 0) {
+				d ^= (G15 << (getBCHDigit(d) - getBCHDigit(G15) ) );
+			}
+			return ( (data << 10) | d) ^ G15_MASK;
+		};
+
+		_this.getBCHTypeNumber = function(data) {
+			var d = data << 12;
+			while (getBCHDigit(d) - getBCHDigit(G18) >= 0) {
+				d ^= (G18 << (getBCHDigit(d) - getBCHDigit(G18) ) );
+			}
+			return (data << 12) | d;
+		};
+
+		_this.getPatternPosition = function(typeNumber) {
+			return PATTERN_POSITION_TABLE[typeNumber - 1];
+		};
+
+		_this.getMaskFunction = function(maskPattern) {
+
+			switch (maskPattern) {
+
+			case QRMaskPattern.PATTERN000 :
+				return function(i, j) { return (i + j) % 2 == 0; };
+			case QRMaskPattern.PATTERN001 :
+				return function(i, j) { return i % 2 == 0; };
+			case QRMaskPattern.PATTERN010 :
+				return function(i, j) { return j % 3 == 0; };
+			case QRMaskPattern.PATTERN011 :
+				return function(i, j) { return (i + j) % 3 == 0; };
+			case QRMaskPattern.PATTERN100 :
+				return function(i, j) { return (Math.floor(i / 2) + Math.floor(j / 3) ) % 2 == 0; };
+			case QRMaskPattern.PATTERN101 :
+				return function(i, j) { return (i * j) % 2 + (i * j) % 3 == 0; };
+			case QRMaskPattern.PATTERN110 :
+				return function(i, j) { return ( (i * j) % 2 + (i * j) % 3) % 2 == 0; };
+			case QRMaskPattern.PATTERN111 :
+				return function(i, j) { return ( (i * j) % 3 + (i + j) % 2) % 2 == 0; };
+
+			default :
+				throw new Error('bad maskPattern:' + maskPattern);
+			}
+		};
+
+		_this.getErrorCorrectPolynomial = function(errorCorrectLength) {
+			var a = qrPolynomial([1], 0);
+			for (var i = 0; i < errorCorrectLength; i += 1) {
+				a = a.multiply(qrPolynomial([1, QRMath.gexp(i)], 0) );
+			}
+			return a;
+		};
+
+		_this.getLengthInBits = function(mode, type) {
+
+			if (1 <= type && type < 10) {
+
+				// 1 - 9
+
+				switch(mode) {
+				case QRMode.MODE_NUMBER 	: return 10;
+				case QRMode.MODE_ALPHA_NUM 	: return 9;
+				case QRMode.MODE_8BIT_BYTE	: return 8;
+				case QRMode.MODE_KANJI		: return 8;
+				default :
+					throw new Error('mode:' + mode);
+				}
+
+			} else if (type < 27) {
+
+				// 10 - 26
+
+				switch(mode) {
+				case QRMode.MODE_NUMBER 	: return 12;
+				case QRMode.MODE_ALPHA_NUM 	: return 11;
+				case QRMode.MODE_8BIT_BYTE	: return 16;
+				case QRMode.MODE_KANJI		: return 10;
+				default :
+					throw new Error('mode:' + mode);
+				}
+
+			} else if (type < 41) {
+
+				// 27 - 40
+
+				switch(mode) {
+				case QRMode.MODE_NUMBER 	: return 14;
+				case QRMode.MODE_ALPHA_NUM	: return 13;
+				case QRMode.MODE_8BIT_BYTE	: return 16;
+				case QRMode.MODE_KANJI		: return 12;
+				default :
+					throw new Error('mode:' + mode);
+				}
+
+			} else {
+				throw new Error('type:' + type);
+			}
+		};
+
+		_this.getLostPoint = function(qrcode) {
+
+			var moduleCount = qrcode.getModuleCount();
+
+			var lostPoint = 0;
+
+			// LEVEL1
+
+			for (var row = 0; row < moduleCount; row += 1) {
+				for (var col = 0; col < moduleCount; col += 1) {
+
+					var sameCount = 0;
+					var dark = qrcode.isDark(row, col);
+
+					for (var r = -1; r <= 1; r += 1) {
+
+						if (row + r < 0 || moduleCount <= row + r) {
+							continue;
+						}
+
+						for (var c = -1; c <= 1; c += 1) {
+
+							if (col + c < 0 || moduleCount <= col + c) {
+								continue;
+							}
+
+							if (r == 0 && c == 0) {
+								continue;
+							}
+
+							if (dark == qrcode.isDark(row + r, col + c) ) {
+								sameCount += 1;
+							}
+						}
+					}
+
+					if (sameCount > 5) {
+						lostPoint += (3 + sameCount - 5);
+					}
+				}
+			};
+
+			// LEVEL2
+
+			for (var row = 0; row < moduleCount - 1; row += 1) {
+				for (var col = 0; col < moduleCount - 1; col += 1) {
+					var count = 0;
+					if (qrcode.isDark(row, col) ) count += 1;
+					if (qrcode.isDark(row + 1, col) ) count += 1;
+					if (qrcode.isDark(row, col + 1) ) count += 1;
+					if (qrcode.isDark(row + 1, col + 1) ) count += 1;
+					if (count == 0 || count == 4) {
+						lostPoint += 3;
+					}
+				}
+			}
+
+			// LEVEL3
+
+			for (var row = 0; row < moduleCount; row += 1) {
+				for (var col = 0; col < moduleCount - 6; col += 1) {
+					if (qrcode.isDark(row, col)
+							&& !qrcode.isDark(row, col + 1)
+							&&  qrcode.isDark(row, col + 2)
+							&&  qrcode.isDark(row, col + 3)
+							&&  qrcode.isDark(row, col + 4)
+							&& !qrcode.isDark(row, col + 5)
+							&&  qrcode.isDark(row, col + 6) ) {
+						lostPoint += 40;
+					}
+				}
+			}
+
+			for (var col = 0; col < moduleCount; col += 1) {
+				for (var row = 0; row < moduleCount - 6; row += 1) {
+					if (qrcode.isDark(row, col)
+							&& !qrcode.isDark(row + 1, col)
+							&&  qrcode.isDark(row + 2, col)
+							&&  qrcode.isDark(row + 3, col)
+							&&  qrcode.isDark(row + 4, col)
+							&& !qrcode.isDark(row + 5, col)
+							&&  qrcode.isDark(row + 6, col) ) {
+						lostPoint += 40;
+					}
+				}
+			}
+
+			// LEVEL4
+
+			var darkCount = 0;
+
+			for (var col = 0; col < moduleCount; col += 1) {
+				for (var row = 0; row < moduleCount; row += 1) {
+					if (qrcode.isDark(row, col) ) {
+						darkCount += 1;
+					}
+				}
+			}
+
+			var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5;
+			lostPoint += ratio * 10;
+
+			return lostPoint;
+		};
+
+		return _this;
+	}();
+
+	//---------------------------------------------------------------------
+	// QRMath
+	//---------------------------------------------------------------------
+
+	var QRMath = function() {
+
+		var EXP_TABLE = new Array(256);
+		var LOG_TABLE = new Array(256);
+
+		// initialize tables
+		for (var i = 0; i < 8; i += 1) {
+			EXP_TABLE[i] = 1 << i;
+		}
+		for (var i = 8; i < 256; i += 1) {
+			EXP_TABLE[i] = EXP_TABLE[i - 4]
+				^ EXP_TABLE[i - 5]
+				^ EXP_TABLE[i - 6]
+				^ EXP_TABLE[i - 8];
+		}
+		for (var i = 0; i < 255; i += 1) {
+			LOG_TABLE[EXP_TABLE[i] ] = i;
+		}
+
+		var _this = {};
+
+		_this.glog = function(n) {
+
+			if (n < 1) {
+				throw new Error('glog(' + n + ')');
+			}
+
+			return LOG_TABLE[n];
+		};
+
+		_this.gexp = function(n) {
+
+			while (n < 0) {
+				n += 255;
+			}
+
+			while (n >= 256) {
+				n -= 255;
+			}
+
+			return EXP_TABLE[n];
+		};
+
+		return _this;
+	}();
+
+	//---------------------------------------------------------------------
+	// qrPolynomial
+	//---------------------------------------------------------------------
+
+	function qrPolynomial(num, shift) {
+
+		if (typeof num.length == 'undefined') {
+			throw new Error(num.length + '/' + shift);
+		}
+
+		var _num = function() {
+			var offset = 0;
+			while (offset < num.length && num[offset] == 0) {
+				offset += 1;
+			}
+			var _num = new Array(num.length - offset + shift);
+			for (var i = 0; i < num.length - offset; i += 1) {
+				_num[i] = num[i + offset];
+			}
+			return _num;
+		}();
+
+		var _this = {};
+
+		_this.getAt = function(index) {
+			return _num[index];
+		};
+
+		_this.getLength = function() {
+			return _num.length;
+		};
+
+		_this.multiply = function(e) {
+
+			var num = new Array(_this.getLength() + e.getLength() - 1);
+
+			for (var i = 0; i < _this.getLength(); i += 1) {
+				for (var j = 0; j < e.getLength(); j += 1) {
+					num[i + j] ^= QRMath.gexp(QRMath.glog(_this.getAt(i) ) + QRMath.glog(e.getAt(j) ) );
+				}
+			}
+
+			return qrPolynomial(num, 0);
+		};
+
+		_this.mod = function(e) {
+
+			if (_this.getLength() - e.getLength() < 0) {
+				return _this;
+			}
+
+			var ratio = QRMath.glog(_this.getAt(0) ) - QRMath.glog(e.getAt(0) );
+
+			var num = new Array(_this.getLength() );
+			for (var i = 0; i < _this.getLength(); i += 1) {
+				num[i] = _this.getAt(i);
+			}
+
+			for (var i = 0; i < e.getLength(); i += 1) {
+				num[i] ^= QRMath.gexp(QRMath.glog(e.getAt(i) ) + ratio);
+			}
+
+			// recursive call
+			return qrPolynomial(num, 0).mod(e);
+		};
+
+		return _this;
+	};
+
+	//---------------------------------------------------------------------
+	// QRRSBlock
+	//---------------------------------------------------------------------
+
+	var QRRSBlock = function() {
+
+		var RS_BLOCK_TABLE = [
+
+			// L
+			// M
+			// Q
+			// H
+
+			// 1
+			[1, 26, 19],
+			[1, 26, 16],
+			[1, 26, 13],
+			[1, 26, 9],
+
+			// 2
+			[1, 44, 34],
+			[1, 44, 28],
+			[1, 44, 22],
+			[1, 44, 16],
+
+			// 3
+			[1, 70, 55],
+			[1, 70, 44],
+			[2, 35, 17],
+			[2, 35, 13],
+
+			// 4
+			[1, 100, 80],
+			[2, 50, 32],
+			[2, 50, 24],
+			[4, 25, 9],
+
+			// 5
+			[1, 134, 108],
+			[2, 67, 43],
+			[2, 33, 15, 2, 34, 16],
+			[2, 33, 11, 2, 34, 12],
+
+			// 6
+			[2, 86, 68],
+			[4, 43, 27],
+			[4, 43, 19],
+			[4, 43, 15],
+
+			// 7
+			[2, 98, 78],
+			[4, 49, 31],
+			[2, 32, 14, 4, 33, 15],
+			[4, 39, 13, 1, 40, 14],
+
+			// 8
+			[2, 121, 97],
+			[2, 60, 38, 2, 61, 39],
+			[4, 40, 18, 2, 41, 19],
+			[4, 40, 14, 2, 41, 15],
+
+			// 9
+			[2, 146, 116],
+			[3, 58, 36, 2, 59, 37],
+			[4, 36, 16, 4, 37, 17],
+			[4, 36, 12, 4, 37, 13],
+
+			// 10
+			[2, 86, 68, 2, 87, 69],
+			[4, 69, 43, 1, 70, 44],
+			[6, 43, 19, 2, 44, 20],
+			[6, 43, 15, 2, 44, 16]
+		];
+
+		var qrRSBlock = function(totalCount, dataCount) {
+			var _this = {};
+			_this.totalCount = totalCount;
+			_this.dataCount = dataCount;
+			return _this;
+		};
+
+		var _this = {};
+
+		var getRsBlockTable = function(typeNumber, errorCorrectLevel) {
+
+			switch(errorCorrectLevel) {
+			case QRErrorCorrectLevel.L :
+				return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
+			case QRErrorCorrectLevel.M :
+				return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
+			case QRErrorCorrectLevel.Q :
+				return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
+			case QRErrorCorrectLevel.H :
+				return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
+			default :
+				return undefined;
+			}
+		};
+
+		_this.getRSBlocks = function(typeNumber, errorCorrectLevel) {
+
+			var rsBlock = getRsBlockTable(typeNumber, errorCorrectLevel);
+
+			if (typeof rsBlock == 'undefined') {
+				throw new Error('bad rs block @ typeNumber:' + typeNumber +
+						'/errorCorrectLevel:' + errorCorrectLevel);
+			}
+
+			var length = rsBlock.length / 3;
+
+			var list = new Array();
+
+			for (var i = 0; i < length; i += 1) {
+
+				var count = rsBlock[i * 3 + 0];
+				var totalCount = rsBlock[i * 3 + 1];
+				var dataCount = rsBlock[i * 3 + 2];
+
+				for (var j = 0; j < count; j += 1) {
+					list.push(qrRSBlock(totalCount, dataCount) );
+				}
+			}
+
+			return list;
+		};
+
+		return _this;
+	}();
+
+        // jryans: Add module support
+        exports.QRRSBlock = QRRSBlock;
+
+	//---------------------------------------------------------------------
+	// qrBitBuffer
+	//---------------------------------------------------------------------
+
+	var qrBitBuffer = function() {
+
+		var _buffer = new Array();
+		var _length = 0;
+
+		var _this = {};
+
+		_this.getBuffer = function() {
+			return _buffer;
+		};
+
+		_this.getAt = function(index) {
+			var bufIndex = Math.floor(index / 8);
+			return ( (_buffer[bufIndex] >>> (7 - index % 8) ) & 1) == 1;
+		};
+
+		_this.put = function(num, length) {
+			for (var i = 0; i < length; i += 1) {
+				_this.putBit( ( (num >>> (length - i - 1) ) & 1) == 1);
+			}
+		};
+
+		_this.getLengthInBits = function() {
+			return _length;
+		};
+
+		_this.putBit = function(bit) {
+
+			var bufIndex = Math.floor(_length / 8);
+			if (_buffer.length <= bufIndex) {
+				_buffer.push(0);
+			}
+
+			if (bit) {
+				_buffer[bufIndex] |= (0x80 >>> (_length % 8) );
+			}
+
+			_length += 1;
+		};
+
+		return _this;
+	};
+
+	//---------------------------------------------------------------------
+	// qr8BitByte
+	//---------------------------------------------------------------------
+
+	var qr8BitByte = function(data) {
+
+		var _mode = QRMode.MODE_8BIT_BYTE;
+		var _data = data;
+		var _bytes = qrcode.stringToBytes(data);
+
+		var _this = {};
+
+		_this.getMode = function() {
+			return _mode;
+		};
+
+		_this.getLength = function(buffer) {
+			return _bytes.length;
+		};
+
+		_this.write = function(buffer) {
+			for (var i = 0; i < _bytes.length; i += 1) {
+				buffer.put(_bytes[i], 8);
+			}
+		};
+
+		return _this;
+	};
+
+	//=====================================================================
+	// GIF Support etc.
+	//
+
+	//---------------------------------------------------------------------
+	// byteArrayOutputStream
+	//---------------------------------------------------------------------
+
+	var byteArrayOutputStream = function() {
+
+		var _bytes = new Array();
+
+		var _this = {};
+
+		_this.writeByte = function(b) {
+			_bytes.push(b & 0xff);
+		};
+
+		_this.writeShort = function(i) {
+			_this.writeByte(i);
+			_this.writeByte(i >>> 8);
+		};
+
+		_this.writeBytes = function(b, off, len) {
+			off = off || 0;
+			len = len || b.length;
+			for (var i = 0; i < len; i += 1) {
+				_this.writeByte(b[i + off]);
+			}
+		};
+
+		_this.writeString = function(s) {
+			for (var i = 0; i < s.length; i += 1) {
+				_this.writeByte(s.charCodeAt(i) );
+			}
+		};
+
+		_this.toByteArray = function() {
+			return _bytes;
+		};
+
+		_this.toString = function() {
+			var s = '';
+			s += '[';
+			for (var i = 0; i < _bytes.length; i += 1) {
+				if (i > 0) {
+					s += ',';
+				}
+				s += _bytes[i];
+			}
+			s += ']';
+			return s;
+		};
+
+		return _this;
+	};
+
+	//---------------------------------------------------------------------
+	// base64EncodeOutputStream
+	//---------------------------------------------------------------------
+
+	var base64EncodeOutputStream = function() {
+
+		var _buffer = 0;
+		var _buflen = 0;
+		var _length = 0;
+		var _base64 = '';
+
+		var _this = {};
+
+		var writeEncoded = function(b) {
+			_base64 += String.fromCharCode(encode(b & 0x3f) );
+		};
+
+		var encode = function(n) {
+			if (n < 0) {
+				// error.
+			} else if (n < 26) {
+				return 0x41 + n;
+			} else if (n < 52) {
+				return 0x61 + (n - 26);
+			} else if (n < 62) {
+				return 0x30 + (n - 52);
+			} else if (n == 62) {
+				return 0x2b;
+			} else if (n == 63) {
+				return 0x2f;
+			}
+			throw new Error('n:' + n);
+		};
+
+		_this.writeByte = function(n) {
+
+			_buffer = (_buffer << 8) | (n & 0xff);
+			_buflen += 8;
+			_length += 1;
+
+			while (_buflen >= 6) {
+				writeEncoded(_buffer >>> (_buflen - 6) );
+				_buflen -= 6;
+			}
+		};
+
+		_this.flush = function() {
+
+			if (_buflen > 0) {
+				writeEncoded(_buffer << (6 - _buflen) );
+				_buffer = 0;
+				_buflen = 0;
+			}
+
+			if (_length % 3 != 0) {
+				// padding
+				var padlen = 3 - _length % 3;
+				for (var i = 0; i < padlen; i += 1) {
+					_base64 += '=';
+				}
+			}
+		};
+
+		_this.toString = function() {
+			return _base64;
+		};
+
+		return _this;
+	};
+
+	//---------------------------------------------------------------------
+	// base64DecodeInputStream
+	//---------------------------------------------------------------------
+
+	var base64DecodeInputStream = function(str) {
+
+		var _str = str;
+		var _pos = 0;
+		var _buffer = 0;
+		var _buflen = 0;
+
+		var _this = {};
+
+		_this.read = function() {
+
+			while (_buflen < 8) {
+
+				if (_pos >= _str.length) {
+					if (_buflen == 0) {
+						return -1;
+					}
+					throw new Error('unexpected end of file./' + _buflen);
+				}
+
+				var c = _str.charAt(_pos);
+				_pos += 1;
+
+				if (c == '=') {
+					_buflen = 0;
+					return -1;
+				} else if (c.match(/^\s$/) ) {
+					// ignore if whitespace.
+					continue;
+				}
+
+				_buffer = (_buffer << 6) | decode(c.charCodeAt(0) );
+				_buflen += 6;
+			}
+
+			var n = (_buffer >>> (_buflen - 8) ) & 0xff;
+			_buflen -= 8;
+			return n;
+		};
+
+		var decode = function(c) {
+			if (0x41 <= c && c <= 0x5a) {
+				return c - 0x41;
+			} else if (0x61 <= c && c <= 0x7a) {
+				return c - 0x61 + 26;
+			} else if (0x30 <= c && c <= 0x39) {
+				return c - 0x30 + 52;
+			} else if (c == 0x2b) {
+				return 62;
+			} else if (c == 0x2f) {
+				return 63;
+			} else {
+				throw new Error('c:' + c);
+			}
+		};
+
+		return _this;
+	};
+
+	//---------------------------------------------------------------------
+	// gifImage (B/W)
+	//---------------------------------------------------------------------
+
+	var gifImage = function(width, height) {
+
+		var _width = width;
+		var _height = height;
+		var _data = new Array(width * height);
+
+		var _this = {};
+
+		_this.setPixel = function(x, y, pixel) {
+			_data[y * _width + x] = pixel;
+		};
+
+		_this.write = function(out) {
+
+			//---------------------------------
+			// GIF Signature
+
+			out.writeString('GIF87a');
+
+			//---------------------------------
+			// Screen Descriptor
+
+			out.writeShort(_width);
+			out.writeShort(_height);
+
+			out.writeByte(0x80); // 2bit
+			out.writeByte(0);
+			out.writeByte(0);
+
+			//---------------------------------
+			// Global Color Map
+
+			// black
+			out.writeByte(0x00);
+			out.writeByte(0x00);
+			out.writeByte(0x00);
+
+			// white
+			out.writeByte(0xff);
+			out.writeByte(0xff);
+			out.writeByte(0xff);
+
+			//---------------------------------
+			// Image Descriptor
+
+			out.writeString(',');
+			out.writeShort(0);
+			out.writeShort(0);
+			out.writeShort(_width);
+			out.writeShort(_height);
+			out.writeByte(0);
+
+			//---------------------------------
+			// Local Color Map
+
+			//---------------------------------
+			// Raster Data
+
+			var lzwMinCodeSize = 2;
+			var raster = getLZWRaster(lzwMinCodeSize);
+
+			out.writeByte(lzwMinCodeSize);
+
+			var offset = 0;
+
+			while (raster.length - offset > 255) {
+				out.writeByte(255);
+				out.writeBytes(raster, offset, 255);
+				offset += 255;
+			}
+
+			out.writeByte(raster.length - offset);
+			out.writeBytes(raster, offset, raster.length - offset);
+			out.writeByte(0x00);
+
+			//---------------------------------
+			// GIF Terminator
+			out.writeString(';');
+		};
+
+		var bitOutputStream = function(out) {
+
+			var _out = out;
+			var _bitLength = 0;
+			var _bitBuffer = 0;
+
+			var _this = {};
+
+			_this.write = function(data, length) {
+
+				if ( (data >>> length) != 0) {
+					throw new Error('length over');
+				}
+
+				while (_bitLength + length >= 8) {
+					_out.writeByte(0xff & ( (data << _bitLength) | _bitBuffer) );
+					length -= (8 - _bitLength);
+					data >>>= (8 - _bitLength);
+					_bitBuffer = 0;
+					_bitLength = 0;
+				}
+
+				_bitBuffer = (data << _bitLength) | _bitBuffer;
+				_bitLength = _bitLength + length;
+			};
+
+			_this.flush = function() {
+				if (_bitLength > 0) {
+					_out.writeByte(_bitBuffer);
+				}
+			};
+
+			return _this;
+		};
+
+		var getLZWRaster = function(lzwMinCodeSize) {
+
+			var clearCode = 1 << lzwMinCodeSize;
+			var endCode = (1 << lzwMinCodeSize) + 1;
+			var bitLength = lzwMinCodeSize + 1;
+
+			// Setup LZWTable
+			var table = lzwTable();
+
+			for (var i = 0; i < clearCode; i += 1) {
+				table.add(String.fromCharCode(i) );
+			}
+			table.add(String.fromCharCode(clearCode) );
+			table.add(String.fromCharCode(endCode) );
+
+			var byteOut = byteArrayOutputStream();
+			var bitOut = bitOutputStream(byteOut);
+
+			// clear code
+			bitOut.write(clearCode, bitLength);
+
+			var dataIndex = 0;
+
+			var s = String.fromCharCode(_data[dataIndex]);
+			dataIndex += 1;
+
+			while (dataIndex < _data.length) {
+
+				var c = String.fromCharCode(_data[dataIndex]);
+				dataIndex += 1;
+
+				if (table.contains(s + c) ) {
+
+					s = s + c;
+
+				} else {
+
+					bitOut.write(table.indexOf(s), bitLength);
+
+					if (table.size() < 0xfff) {
+
+						if (table.size() == (1 << bitLength) ) {
+							bitLength += 1;
+						}
+
+						table.add(s + c);
+					}
+
+					s = c;
+				}
+			}
+
+			bitOut.write(table.indexOf(s), bitLength);
+
+			// end code
+			bitOut.write(endCode, bitLength);
+
+			bitOut.flush();
+
+			return byteOut.toByteArray();
+		};
+
+		var lzwTable = function() {
+
+			var _map = {};
+			var _size = 0;
+
+			var _this = {};
+
+			_this.add = function(key) {
+				if (_this.contains(key) ) {
+					throw new Error('dup key:' + key);
+				}
+				_map[key] = _size;
+				_size += 1;
+			};
+
+			_this.size = function() {
+				return _size;
+			};
+
+			_this.indexOf = function(key) {
+				return _map[key];
+			};
+
+			_this.contains = function(key) {
+				return typeof _map[key] != 'undefined';
+			};
+
+			return _this;
+		};
+
+		return _this;
+	};
+
+        var createGifData = function(width, height, getPixel) {
+
+        	var gif = gifImage(width, height);
+		for (var y = 0; y < height; y += 1) {
+			for (var x = 0; x < width; x += 1) {
+				gif.setPixel(x, y, getPixel(x, y) );
+			}
+		}
+
+		var b = byteArrayOutputStream();
+		gif.write(b);
+
+		var base64 = base64EncodeOutputStream();
+		var bytes = b.toByteArray();
+		for (var i = 0; i < bytes.length; i += 1) {
+			base64.writeByte(bytes[i]);
+		}
+		base64.flush();
+                return base64;
+
+        };
+
+	var createImgTag = function(width, height, getPixel, alt) {
+
+                var base64 = createGifData(width, height, getPixel);
+		var img = '';
+		img += '<img';
+		img += '\u0020src="';
+		img += 'data:image/gif;base64,';
+		img += base64;
+		img += '"';
+		img += '\u0020width="';
+		img += width;
+		img += '"';
+		img += '\u0020height="';
+		img += height;
+		img += '"';
+		if (alt) {
+			img += '\u0020alt="';
+			img += alt;
+			img += '"';
+		}
+		img += '/>';
+
+		return img;
+	};
+
+	//---------------------------------------------------------------------
+	// returns qrcode function.
+
+	return qrcode;
+}();
+
+// jryans: Add module support
+exports.Encoder = qrcode;
diff --git a/toolkit/devtools/qrcode/encoder/moz.build b/toolkit/devtools/qrcode/encoder/moz.build
new file mode 100644
index 000000000000..96521dce320a
--- /dev/null
+++ b/toolkit/devtools/qrcode/encoder/moz.build
@@ -0,0 +1,11 @@
+# -*- 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/.
+
+JS_MODULES_PATH = 'modules/devtools/qrcode/encoder'
+
+EXTRA_JS_MODULES += [
+    'index.js',
+]
diff --git a/toolkit/devtools/qrcode/moz.build b/toolkit/devtools/qrcode/moz.build
new file mode 100644
index 000000000000..bc7a3a906298
--- /dev/null
+++ b/toolkit/devtools/qrcode/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/.
+
+PARALLEL_DIRS += [
+    'encoder'
+]
+
+JS_MODULES_PATH = 'modules/devtools/qrcode'
+
+EXTRA_JS_MODULES += [
+    'qrcode.js',
+]
+
+XPCSHELL_TESTS_MANIFESTS += ['tests/unit/xpcshell.ini']
diff --git a/toolkit/devtools/qrcode/qrcode.js b/toolkit/devtools/qrcode/qrcode.js
new file mode 100644
index 000000000000..da1692e167e6
--- /dev/null
+++ b/toolkit/devtools/qrcode/qrcode.js
@@ -0,0 +1,62 @@
+/* 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/. */
+
+"use strict";
+
+let { Encoder, QRRSBlock, QRErrorCorrectLevel } = require("./encoder/index");
+
+/**
+ * There are many "versions" of QR codes, which describes how many dots appear
+ * in the resulting image, thus limiting the amount of data that can be
+ * represented.
+ *
+ * The encoder used here allows for versions 1 - 10 (more dots for larger
+ * versions).
+ *
+ * It expects you to pick a version large enough to contain your message.  Here
+ * we search for the mimimum version based on the message length.
+ * @param string message
+ *        Text to encode
+ * @param string quality
+ *        Quality level: L, M, Q, H
+ * @return integer
+ */
+exports.findMinimumVersion = function(message, quality) {
+  let msgLength = message.length;
+  let qualityLevel = QRErrorCorrectLevel[quality];
+  for (let version = 1; version <= 10; version++) {
+    let rsBlocks = QRRSBlock.getRSBlocks(version, qualityLevel);
+    let maxLength = rsBlocks.reduce((prev, block) => {
+      return prev + block.dataCount;
+    }, 0);
+    // Remove two bytes to fit header info
+    maxLength -= 2;
+    if (msgLength <= maxLength) {
+      return version;
+    }
+  }
+  throw new Error("Message too large");
+};
+
+/**
+ * Simple wrapper around the underlying encoder's API.
+ * @param string  message
+ *        Text to encode
+ * @param string  quality (optional)
+          Quality level: L, M, Q, H
+ * @param integer version (optional)
+ *        QR code "version" large enough to contain the message
+ * @return object with the following fields:
+ *   * src:    an image encoded a data URI
+ *   * height: image height
+ *   * width:  image width
+ */
+exports.encodeToDataURI = function(message, quality, version) {
+  quality = quality || "H";
+  version = version || exports.findMinimumVersion(message, quality);
+  let encoder = new Encoder(version, quality);
+  encoder.addData(message);
+  encoder.make();
+  return encoder.createImgData();
+};
diff --git a/toolkit/devtools/qrcode/tests/unit/test_encode.js b/toolkit/devtools/qrcode/tests/unit/test_encode.js
new file mode 100644
index 000000000000..efe357d55315
--- /dev/null
+++ b/toolkit/devtools/qrcode/tests/unit/test_encode.js
@@ -0,0 +1,28 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+/**
+ * Test encoding a simple message.
+ */
+
+const { utils: Cu } = Components;
+const { devtools } = Cu.import("resource://gre/modules/devtools/Loader.jsm", {});
+const { require } = devtools;
+
+const QR = require("devtools/toolkit/qrcode/qrcode");
+
+function run_test() {
+  let imgData = QR.encodeToDataURI("HELLO", "L");
+  do_check_eq(imgData.src,
+              "data:image/gif;base64,R0lGODdhOgA6AIAAAAAAAP///ywAAAAAOgA6AAAC" +
+              "/4yPqcvtD6OctNqLs968+w+G4gKU5nkaKKquLuW+QVy2tAkDTj3rfQts8CRDko" +
+              "+HPPoYRUgy9YsyldDm44mLWhHYZM6W7WaDqyCRGkZDySxpRGw2sqvLt1q5w/fo" +
+              "XyE6vnUQOJUHBlinMGh046V1F5PDqNcoqcgBOWKBKbK2N+aY+Ih49VkmqMcl2l" +
+              "dkhZUK1umE6jZXJ2ZJaujZaRqH4bpb2uZrJxvIt4Ebe9qoYYrJOsw8apz2bCut" +
+              "m9kqDcw52uuImyr5Oh1KXH1jrn2anuunywtODU/o2c6teceW39ZcLFg/fNMo1b" +
+              "t3jVw2dwTPwJq1KYG3gAklCgu37yGxeScYKyiCc+7DR34hPVQiuQ7UhJMagyEb" +
+              "lymmzJk0a9q8iTOnzp0NCgAAOw==");
+  do_check_eq(imgData.width, 58);
+  do_check_eq(imgData.height, 58);
+}
diff --git a/toolkit/devtools/qrcode/tests/unit/xpcshell.ini b/toolkit/devtools/qrcode/tests/unit/xpcshell.ini
new file mode 100644
index 000000000000..c2766e35bb46
--- /dev/null
+++ b/toolkit/devtools/qrcode/tests/unit/xpcshell.ini
@@ -0,0 +1,5 @@
+[DEFAULT]
+head =
+tail =
+
+[test_encode.js]
diff --git a/toolkit/mozapps/extensions/test/browser/head.js b/toolkit/mozapps/extensions/test/browser/head.js
index c046f8029b63..3245fc7938c0 100644
--- a/toolkit/mozapps/extensions/test/browser/head.js
+++ b/toolkit/mozapps/extensions/test/browser/head.js
@@ -147,6 +147,12 @@ function log_exceptions(aCallback, ...aArgs) {
   }
 }
 
+function log_callback(aPromise, aCallback) {
+  aPromise.then(aCallback)
+    .then(null, e => info("Exception thrown: " + e));
+  return aPromise;
+}
+
 function add_test(test) {
   gPendingTests.push(test);
 }
@@ -283,87 +289,82 @@ function wait_for_manager_load(aManagerWindow, aCallback) {
 }
 
 function open_manager(aView, aCallback, aLoadCallback, aLongerTimeout) {
-  let deferred = Promise.defer();
+  let p = new Promise((resolve, reject) => {
 
-  function setup_manager(aManagerWindow) {
-    if (aLoadCallback)
-      log_exceptions(aLoadCallback, aManagerWindow);
+    function setup_manager(aManagerWindow) {
+      if (aLoadCallback)
+        log_exceptions(aLoadCallback, aManagerWindow);
 
-    if (aView)
-      aManagerWindow.loadView(aView);
+      if (aView)
+        aManagerWindow.loadView(aView);
 
-    ok(aManagerWindow != null, "Should have an add-ons manager window");
-    is(aManagerWindow.location, MANAGER_URI, "Should be displaying the correct UI");
+      ok(aManagerWindow != null, "Should have an add-ons manager window");
+      is(aManagerWindow.location, MANAGER_URI, "Should be displaying the correct UI");
 
-    waitForFocus(function() {
-      wait_for_manager_load(aManagerWindow, function() {
-        wait_for_view_load(aManagerWindow, function() {
-          // Some functions like synthesizeMouse don't like to be called during
-          // the load event so ensure that has completed
-          executeSoon(function() {
-            if (aCallback) {
-              log_exceptions(aCallback, aManagerWindow);
-            }
-            deferred.resolve(aManagerWindow);
-          });
-        }, null, aLongerTimeout);
-      });
-    }, aManagerWindow);
-  }
+      waitForFocus(function() {
+        info("window has focus, waiting for manager load");
+        wait_for_manager_load(aManagerWindow, function() {
+          info("Manager waiting for view load");
+          wait_for_view_load(aManagerWindow, function() {
+            resolve(aManagerWindow);
+          }, null, aLongerTimeout);
+        });
+      }, aManagerWindow);
+    }
 
-  if (gUseInContentUI) {
-    gBrowser.selectedTab = gBrowser.addTab();
-    switchToTabHavingURI(MANAGER_URI, true);
+    if (gUseInContentUI) {
+      info("Loading manager window in tab");
+      Services.obs.addObserver(function (aSubject, aTopic, aData) {
+        Services.obs.removeObserver(arguments.callee, aTopic);
+        if (aSubject.location.href != MANAGER_URI) {
+          info("Ignoring load event for " + aSubject.location.href);
+          return;
+        }
+        setup_manager(aSubject);
+      }, "EM-loaded", false);
 
-    // This must be a new load, else the ping/pong would have
-    // found the window above.
-    Services.obs.addObserver(function (aSubject, aTopic, aData) {
-      Services.obs.removeObserver(arguments.callee, aTopic);
-      if (aSubject.location.href != MANAGER_URI)
-        return;
-      setup_manager(aSubject);
-    }, "EM-loaded", false);
-    return deferred.promise;
-  }
+      gBrowser.selectedTab = gBrowser.addTab();
+      switchToTabHavingURI(MANAGER_URI, true);
+    } else {
+      info("Loading manager window in dialog");
+      Services.obs.addObserver(function (aSubject, aTopic, aData) {
+        Services.obs.removeObserver(arguments.callee, aTopic);
+        setup_manager(aSubject);
+      }, "EM-loaded", false);
 
-  openDialog(MANAGER_URI);
-  Services.obs.addObserver(function (aSubject, aTopic, aData) {
-    Services.obs.removeObserver(arguments.callee, aTopic);
-    setup_manager(aSubject);
-  }, "EM-loaded", false);
+      openDialog(MANAGER_URI);
+    }
+  });
 
-  return deferred.promise;
+  return log_callback(p, aCallback);
 }
 
 function close_manager(aManagerWindow, aCallback, aLongerTimeout) {
-  let deferred = Promise.defer();
-  requestLongerTimeout(aLongerTimeout ? aLongerTimeout : 2);
+  let p = new Promise((resolve, reject) => {
+    requestLongerTimeout(aLongerTimeout ? aLongerTimeout : 2);
 
-  ok(aManagerWindow != null, "Should have an add-ons manager window to close");
-  is(aManagerWindow.location, MANAGER_URI, "Should be closing window with correct URI");
+    ok(aManagerWindow != null, "Should have an add-ons manager window to close");
+    is(aManagerWindow.location, MANAGER_URI, "Should be closing window with correct URI");
 
-  aManagerWindow.addEventListener("unload", function() {
-    this.removeEventListener("unload", arguments.callee, false);
-    if (aCallback) {
-      log_exceptions(aCallback);
-    }
-    deferred.resolve();
-  }, false);
+    aManagerWindow.addEventListener("unload", function() {
+      info("Manager window unloaded");
+      this.removeEventListener("unload", arguments.callee, false);
+      resolve();
+    }, false);
+  });
 
   aManagerWindow.close();
 
-  return deferred.promise;
+  return log_callback(p, aCallback);
 }
 
 function restart_manager(aManagerWindow, aView, aCallback, aLoadCallback) {
   if (!aManagerWindow) {
-    open_manager(aView, aCallback, aLoadCallback);
-    return;
+    return open_manager(aView, aCallback, aLoadCallback);
   }
 
-  close_manager(aManagerWindow, function() {
-    open_manager(aView, aCallback, aLoadCallback);
-  });
+  return close_manager(aManagerWindow)
+    .then(() => open_manager(aView, aCallback, aLoadCallback));
 }
 
 function wait_for_window_open(aCallback) {
@@ -437,25 +438,17 @@ function is_element_hidden(aElement, aMsg) {
  * The callback will receive the Addon for the installed add-on.
  */
 function install_addon(path, cb, pathPrefix=TESTROOT) {
-  let deferred = Promise.defer();
+  let p = new Promise((resolve, reject) => {
+    AddonManager.getInstallForURL(pathPrefix + path, (install) => {
+      install.addListener({
+        onInstallEnded: () => resolve(install.addon),
+      });
 
-  AddonManager.getInstallForURL(pathPrefix + path, (install) => {
-    install.addListener({
-      onInstallEnded: () => {
-        executeSoon(() => {
-          if (cb) {
-            cb(install.addon);
-          }
+      install.install();
+    }, "application/x-xpinstall");
+  });
 
-          deferred.resolve(install.addon);
-        });
-      },
-    });
-
-    install.install();
-  }, "application/x-xpinstall");
-
-  return deferred.promise;
+  return log_callback(p, cb);
 }
 
 function CategoryUtilities(aManagerWindow) {
@@ -517,22 +510,14 @@ CategoryUtilities.prototype = {
   },
 
   open: function(aCategory, aCallback) {
-    let deferred = Promise.defer();
 
     isnot(this.window, null, "Should not open category when manager window is not loaded");
     ok(this.isVisible(aCategory), "Category should be visible if attempting to open it");
 
     EventUtils.synthesizeMouse(aCategory, 2, 2, { }, this.window);
+    let p = new Promise((resolve, reject) => wait_for_view_load(this.window, resolve));
 
-    wait_for_view_load(this.window, (win) => {
-      if (aCallback) {
-        log_exceptions(aCallback, win);
-      }
-
-      deferred.resolve(win);
-    });
-
-    return deferred.promise;
+    return log_callback(p, aCallback);
   },
 
   openType: function(aCategoryType, aCallback) {