Allow MainThreadEventQueue to call the RenderWidget directly.

content/renderer/input/main_thread_event_queue_task.h

Index: content/renderer/input/main_thread_event_queue_task.h
diff --git a/content/renderer/input/main_thread_event_queue_task.h b/content/renderer/input/main_thread_event_queue_task.h
index c8e5fda123ad57c5b5c66e6520b6403f995661f2..20d1647e2b7ca1b4c2a6cf4ce5484f047ebd7603 100644
--- a/content/renderer/input/main_thread_event_queue_task.h
+++ b/content/renderer/input/main_thread_event_queue_task.h
@@ -11,7 +11,7 @@
 
 namespace content {
 
-class MainThreadEventQueueClient;
+class MainThreadEventQueue;
 
 // A work item to execute from the main thread event queue.
 // The MainThreadEventQueue supports 2 types of tasks (subclasses):
@@ -38,15 +38,7 @@ class MainThreadEventQueueTask {
   // Iteration of the list begins at the end of the queue (newest to oldest).
   virtual FilterResult FilterNewEvent(const MainThreadEventQueueTask&) = 0;
   virtual bool IsWebInputEvent() const = 0;
-  virtual void Dispatch(int routing_id, MainThreadEventQueueClient*) = 0;
-
-  virtual void EventHandled(
-      int routing_id,
-      blink::scheduler::RendererScheduler* renderer_scheduler,
-      MainThreadEventQueueClient* client,
-      blink::WebInputEvent::Type type,
-      blink::WebInputEventResult result,
-      InputEventAckState ack_result) = 0;
+  virtual void Dispatch(MainThreadEventQueue*) = 0;
 };
 
 }  // namespace content