Bug 1158111 - "Add caching and control updating tab offset values in the child from the parent side". a=klotz

--HG--
extra : rebase_source : 905ab38197d648ba88fc6ea941f575208df9ff4d

dom/ipc/PBrowser.ipdl

@@ -330,14 +330,6 @@ parent:
 
     sync IsParentWindowMainWidgetVisible() returns (bool visible);
 
-    /**
-     * Returns the offset of this tab from the top level window
-     * origin in device pixels.
-     *
-     * aPoint offset values in device pixels.
-     */
-    prio(high) sync GetTabOffset() returns (LayoutDeviceIntPoint aPoint);
-
     /**
      * Gets the DPI of the screen corresponding to this browser.
      */

dom/ipc/TabParent.cpp

@@ -2266,13 +2266,6 @@ TabParent::RecvEnableDisableCommands(const nsString& aAction,
   return true;
 }
 
-bool
-TabParent::RecvGetTabOffset(LayoutDeviceIntPoint* aPoint)
-{
-  *aPoint = GetChildProcessOffset();
-  return true;
-}
-
 NS_IMETHODIMP
 TabParent::GetChildProcessOffset(int32_t* aOutCssX, int32_t* aOutCssY)
 {

dom/ipc/TabParent.h

@@ -219,7 +219,6 @@ public:
     virtual bool RecvIsParentWindowMainWidgetVisible(bool* aIsVisible) override;
     virtual bool RecvShowTooltip(const uint32_t& aX, const uint32_t& aY, const nsString& aTooltip) override;
     virtual bool RecvHideTooltip() override;
-    virtual bool RecvGetTabOffset(LayoutDeviceIntPoint* aPoint) override;
     virtual bool RecvGetDPI(float* aValue) override;
     virtual bool RecvGetDefaultScale(double* aValue) override;
     virtual bool RecvGetMaxTouchPoints(uint32_t* aTouchPoints) override;

layout/generic/nsPluginFrame.cpp

@@ -776,9 +776,7 @@ nsPluginFrame::GetRemoteTabChromeOffset()
       if (topWindow) {
         dom::TabChild* tc = dom::TabChild::GetFrom(topWindow);
         if (tc) {
-          LayoutDeviceIntPoint chromeOffset;
-          tc->SendGetTabOffset(&chromeOffset);
-          offset -= chromeOffset;
+          offset += tc->GetChromeDisplacement();
         }
       }
     }