cc: Make separate interface for BeginFrame ipc from OutputSurface

content/browser/android/in_process/synchronous_compositor_factory_impl.h

 // Copyright 2014 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_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_FACTORY_IMPL_H_
 #define CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_FACTORY_IMPL_H_
 
 #include "base/synchronization/lock.h"
 #include "content/browser/android/in_process/synchronous_input_event_filter.h"
 #include "content/renderer/android/synchronous_compositor_factory.h"
@@ skipping 20 matching lines @@
 
   // SynchronousCompositorFactory
   virtual scoped_refptr<base::MessageLoopProxy> GetCompositorMessageLoop()
       override;
   virtual bool RecordFullLayer() override;
   virtual scoped_ptr<cc::OutputSurface> CreateOutputSurface(
       int routing_id,
       scoped_refptr<content::FrameSwapMessageQueue> frame_swap_message_queue)
       override;
   virtual InputHandlerManagerClient* GetInputHandlerManagerClient() override;
+  virtual scoped_ptr<cc::BeginFrameSource> CreateExternalBeginFrameSource(
+      int routing_id) override;
   virtual scoped_refptr<webkit::gpu::ContextProviderWebContext>
       CreateOffscreenContextProvider(
           const blink::WebGraphicsContext3D::Attributes& attributes,
           const std::string& debug_name) override;
   virtual scoped_refptr<StreamTextureFactory> CreateStreamTextureFactory(
       int view_id) override;
   virtual webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl*
       CreateOffscreenGraphicsContext3D(
           const blink::WebGraphicsContext3D::Attributes& attributes) override;
 
@@ skipping 28 matching lines @@
   // |num_hardware_compositor_lock_| is updated on UI thread only but can be
   // read on renderer main thread.
   base::Lock num_hardware_compositor_lock_;
   unsigned int num_hardware_compositors_;
   scoped_refptr<base::MessageLoopProxy> main_thread_proxy_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_FACTORY_IMPL_H_