Revert of Move compositor InputHandler from RenderViewImpl to RenderWidget.

third_party/WebKit/Source/core/frame/EventHandlerRegistry.h

Index: third_party/WebKit/Source/core/frame/EventHandlerRegistry.h
diff --git a/third_party/WebKit/Source/core/frame/EventHandlerRegistry.h b/third_party/WebKit/Source/core/frame/EventHandlerRegistry.h
index a6186a0a2a74f5f259a7fc3e2b9ef5af62277ca7..fd23b1a4f9df59fb63363c9e3318c90c24825408 100644
--- a/third_party/WebKit/Source/core/frame/EventHandlerRegistry.h
+++ b/third_party/WebKit/Source/core/frame/EventHandlerRegistry.h
@@ -14,7 +14,6 @@
 class AddEventListenerOptions;
 class Document;
 class EventTarget;
-class LocalFrame;
 
 typedef HashCountedSet<UntracedMember<EventTarget>> EventTargetSet;
 
@@ -96,9 +95,7 @@
   // clients when we have added the first handler or removed the last one for
   // a given event class. |hasActiveHandlers| can be used to distinguish
   // between the two cases.
-  void notifyHasHandlersChanged(LocalFrame*,
-                                EventHandlerClass,
-                                bool hasActiveHandlers);
+  void notifyHasHandlersChanged(EventHandlerClass, bool hasActiveHandlers);
 
   // Called to notify clients whenever a single event handler target is
   // registered or unregistered. If several handlers are registered for the