Bug 1445005. Remove the eventMode bits from frameloader. r=qdot

dom/base/nsFrameLoader.cpp

@@ -169,7 +169,6 @@ nsFrameLoader::nsFrameLoader(Element* aOwner, nsPIDOMWindowOuter* aOpener,
   , mRemoteBrowser(nullptr)
   , mChildID(0)
   , mJSPluginID(aJSPluginID)
-  , mEventMode(FrameLoaderBinding::EVENT_MODE_NORMAL_DISPATCH)
   , mBrowserChangingProcessBlockers(nullptr)
   , mDepthTooGreat(false)
   , mIsTopLevelContent(false)

dom/base/nsFrameLoader.h

@@ -173,12 +173,6 @@ public:
 
   already_AddRefed<nsIMessageSender> GetMessageManager();
 
-  uint32_t EventMode() const { return mEventMode; }
-  void SetEventMode(uint32_t aEventMode)
-  {
-    mEventMode = aEventMode;
-  }
-
   already_AddRefed<Element> GetOwnerElement();
 
   uint32_t LazyWidth() const;
@@ -479,10 +473,6 @@ private:
 
   int32_t mJSPluginID;
 
-  // See FrameLoader.webidl. EVENT_MODE_NORMAL_DISPATCH automatically
-  // forwards some input events to out-of-process content.
-  uint32_t mEventMode;
-
   // Holds the last known size of the frame.
   mozilla::ScreenIntSize mLazySize;
 

dom/events/EventStateManager.cpp

@@ -1439,11 +1439,6 @@ EventStateManager::HandleCrossProcessEvent(WidgetEvent* aEvent,
       continue;
     }
 
-    if (frameLoader->EventMode() ==
-          FrameLoaderBinding::EVENT_MODE_DONT_FORWARD_TO_CHILD) {
-      continue;
-    }
-
     DispatchCrossProcessEvent(aEvent, frameLoader, aStatus);
   }
   return aEvent->HasBeenPostedToRemoteProcess();

dom/webidl/FrameLoader.webidl

@@ -116,25 +116,6 @@ interface FrameLoader {
              nsIPrintSettings aPrintSettings,
              optional nsIWebProgressListener? aProgressListener = null);
 
-  /**
-   * The default event mode automatically forwards the events
-   * handled in EventStateManager::HandleCrossProcessEvent to
-   * the child content process when these events are targeted to
-   * the remote browser element.
-   *
-   * Used primarly for input events (mouse, keyboard)
-   */
-  const unsigned long EVENT_MODE_NORMAL_DISPATCH = 0x00000000;
-
-  /**
-   * With this event mode, it's the application's responsability to
-   * convert and forward events to the content process
-   */
-  const unsigned long EVENT_MODE_DONT_FORWARD_TO_CHILD = 0x00000001;
-
-  [Pure]
-  attribute unsigned long eventMode;
-
   /**
    * If false, then the subdocument is not clipped to its CSS viewport, and the
    * subdocument's viewport scrollbar(s) are not rendered.