Change the non-blocking event queue to the main thread event queue.

content/renderer/input/input_handler_manager_client.h

Index: content/renderer/input/input_handler_manager_client.h
diff --git a/content/renderer/input/input_handler_manager_client.h b/content/renderer/input/input_handler_manager_client.h
index c794bd2353a32989095bb5f177e26e49951c0b3f..1eedf55246494a9e178946cd9138121ba8ff400b 100644
--- a/content/renderer/input/input_handler_manager_client.h
+++ b/content/renderer/input/input_handler_manager_client.h
@@ -51,9 +51,8 @@ class CONTENT_EXPORT InputHandlerManagerClient {
   virtual void DidOverscroll(int routing_id,
                              const DidOverscrollParams& params) = 0;
   virtual void DidStopFlinging(int routing_id) = 0;
-  virtual void NonBlockingInputEventHandled(
-      int routing_id,
-      blink::WebInputEvent::Type type) = 0;
+  virtual void NotifyInputEventHandled(int routing_id,
+                                       blink::WebInputEvent::Type type) = 0;
 
  protected:
   InputHandlerManagerClient() {}