Teach main thread event queue about closures.

content/renderer/input/input_handler_manager_client.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_INPUT_INPUT_HANDLER_MANAGER_CLIENT_H_
 #define CONTENT_RENDERER_INPUT_INPUT_HANDLER_MANAGER_CLIENT_H_
 
 #include "base/callback.h"
 #include "base/callback_forward.h"
 #include "base/macros.h"
@@ skipping 21 matching lines @@
   virtual void NotifyInputEventHandled(int routing_id,
                                        blink::WebInputEvent::Type type,
                                        blink::WebInputEventResult result,
                                        InputEventAckState ack_result) = 0;
   virtual void ProcessRafAlignedInput(int routing_id,
                                       base::TimeTicks frame_time) = 0;
 
   // Called from the compositor thread.
   virtual void RegisterRoutingID(int routing_id) = 0;
   virtual void UnregisterRoutingID(int routing_id) = 0;
+  virtual void QueueClosureForMainThreadEventQueue(
+      int routing_id,
+      const base::Closure& closure) = 0;
 
   // |HandleInputEvent| will respond to overscroll by calling the passed in
   // callback.
   // Otherwise |DidOverscroll| will be fired.
   virtual void DidOverscroll(int routing_id,
                              const ui::DidOverscrollParams& params) = 0;
   virtual void DidStopFlinging(int routing_id) = 0;
   virtual void DispatchNonBlockingEventToMainThread(
       int routing_id,
       ui::WebScopedInputEvent event,
@@ skipping 18 matching lines @@
  protected:
   SynchronousInputHandlerProxyClient() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SynchronousInputHandlerProxyClient);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_INPUT_INPUT_HANDLER_MANAGER_CLIENT_H_