cc: Make separate interface for BeginFrame ipc from OutputSurface

content/renderer/render_thread_impl.h

 // Copyright (c) 2012 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_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 190 matching lines @@
 
   scoped_refptr<base::SingleThreadTaskRunner>
   main_thread_compositor_task_runner() const {
     return main_thread_compositor_task_runner_;
   }
 
   IPC::ForwardingMessageFilter* compositor_output_surface_filter() const {
     return compositor_output_surface_filter_.get();
   }
 
+  IPC::ForwardingMessageFilter* begin_frame_source_filter() const {
+    return begin_frame_source_filter_.get();
+  }
+
   InputHandlerManager* input_handler_manager() const {
     return input_handler_manager_.get();
   }
 
   // Will be NULL if threaded compositing has not been enabled.
   scoped_refptr<base::MessageLoopProxy> compositor_message_loop_proxy() const {
     return compositor_message_loop_proxy_;
   }
 
   bool is_gpu_rasterization_enabled() const {
@@ skipping 312 matching lines @@
   scoped_ptr<base::Thread> media_thread_;
 
   // Will point to appropriate MessageLoopProxy after initialization,
   // regardless of whether |compositor_thread_| is overriden.
   scoped_refptr<base::MessageLoopProxy> compositor_message_loop_proxy_;
 
   // May be null if unused by the |input_handler_manager_|.
   scoped_refptr<InputEventFilter> input_event_filter_;
   scoped_ptr<InputHandlerManager> input_handler_manager_;
   scoped_refptr<IPC::ForwardingMessageFilter> compositor_output_surface_filter_;
+  scoped_refptr<IPC::ForwardingMessageFilter> begin_frame_source_filter_;
 
   scoped_refptr<webkit::gpu::ContextProviderWebContext>
       shared_main_thread_contexts_;
 
   ObserverList<RenderProcessObserver> observers_;
 
   scoped_refptr<ContextProviderCommandBuffer> gpu_va_context_provider_;
 
   scoped_ptr<AudioRendererMixerManager> audio_renderer_mixer_manager_;
   scoped_ptr<media::AudioHardwareConfig> audio_hardware_config_;
@@ skipping 26 matching lines @@
   bool is_one_copy_enabled_;
 
   std::map<int, mojo::MessagePipeHandle> pending_render_frame_connects_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_