Use inner HWND for accelerated rendering on windows

chrome/browser/gpu_process_host.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_BROWSER_GPU_PROCESS_HOST_H_
 #define CHROME_BROWSER_GPU_PROCESS_HOST_H_
 #pragma once
 
 #include <queue>
 
@@ skipping 67 matching lines @@
 
   // Message handlers.
   void OnChannelEstablished(const IPC::ChannelHandle& channel_handle,
                             const GPUInfo& gpu_info);
   void OnSynchronizeReply();
 #if defined(OS_LINUX)
   void OnGetViewXID(gfx::NativeViewId id, IPC::Message* reply_msg);
 #elif defined(OS_MACOSX)
   void OnAcceleratedSurfaceSetIOSurface(
       const GpuHostMsg_AcceleratedSurfaceSetIOSurface_Params& params);
-  void OnAcceleratedSurfaceBuffersSwapped(int32 renderer_id,
-                                          int32 render_view_id,
+  void OnAcceleratedSurfaceBuffersSwapped(int renderer_id,
+                                          int render_view_id,
                                           gfx::PluginWindowHandle window,
                                           uint64 surface_id);
+#elif defined(OS_WIN)
+  void OnCreateCompositorHostWindow(int renderer_id,
+                                    int render_view_id,
+                                    IPC::Message* reply_message);
 #endif
 
   // Sends the response for establish channel request to the renderer.
   void SendEstablishChannelReply(const IPC::ChannelHandle& channel,
                                  const GPUInfo& gpu_info,
                                  ResourceMessageFilter* filter);
   // Sends the response for synchronization request to the renderer.
   void SendSynchronizationReply(IPC::Message* reply,
                                 ResourceMessageFilter* filter);
 
@@ skipping 12 matching lines @@
   // the GPU process, but haven't heard back about yet.
   std::queue<ChannelRequest> sent_requests_;
 
   // The pending synchronization requests we need to reply to.
   std::queue<SynchronizationRequest> queued_synchronization_replies_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessHost);
 };
 
 #endif  // CHROME_BROWSER_GPU_PROCESS_HOST_H_