Add flow control between renderer and GPU processes, and, on Mac OS X,...

chrome/gpu/gpu_channel.h

 // Copyright (c) 2010 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 CHROME_GPU_GPU_CHANNEL_H_
 #define CHROME_GPU_GPU_CHANNEL_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 42 matching lines @@
 #endif
 
   // IPC::Channel::Listener implementation:
   virtual void OnMessageReceived(const IPC::Message& msg);
   virtual void OnChannelConnected(int32 peer_pid);
   virtual void OnChannelError();
 
   // IPC::Message::Sender implementation:
   virtual bool Send(IPC::Message* msg);
 
+#if defined(OS_MACOSX)
+  virtual void AcceleratedSurfaceBuffersSwapped(
+      int32 route_id, uint64 swap_buffers_count);
+#endif
+
  private:
   void OnControlMessageReceived(const IPC::Message& msg);
 
   int GenerateRouteID();
 
   // Message handlers.
   void OnCreateViewCommandBuffer(
       gfx::NativeViewId view,
       int32 render_view_id,
       const GPUCreateCommandBufferConfig& init_params,
@@ skipping 31 matching lines @@
   typedef IDMap<GpuCommandBufferStub, IDMapOwnPointer> StubMap;
   StubMap stubs_;
 #endif
 
   bool log_messages_;  // True if we should log sent and received messages.
 
   DISALLOW_COPY_AND_ASSIGN(GpuChannel);
 };
 
 #endif  // CHROME_GPU_GPU_CHANNEL_H_