Send vsync timebase updates to the browser compositor

content/browser/gpu/gpu_process_host.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_BROWSER_GPU_GPU_PROCESS_HOST_H_
 #define CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_
 
 #include <map>
 #include <queue>
 #include <string>
 
 #include "base/callback.h"
 #include "base/memory/linked_ptr.h"
 #include "base/process.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/time.h"
 #include "content/common/content_export.h"
 #include "content/common/gpu/gpu_process_launch_causes.h"
 #include "content/public/browser/browser_child_process_host_delegate.h"
 #include "content/public/common/gpu_info.h"
+#include "ipc/ipc_channel_proxy.h"
 #include "ipc/ipc_sender.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/size.h"
 
 class GpuMainThread;
 struct GPUCreateCommandBufferConfig;
 struct GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params;
 struct GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params;
 struct GpuHostMsg_AcceleratedSurfaceRelease_Params;
 
@@ skipping 39 matching lines @@
                                       IPC::Message* message);
 
   // Get the GPU process host for the GPU process with the given ID. Returns
   // null if the process no longer exists.
   static GpuProcessHost* FromID(int host_id);
   int host_id() const { return host_id_; }
 
   // IPC::Sender implementation.
   virtual bool Send(IPC::Message* msg) OVERRIDE;
 
+  // Adds a message filter to the GpuProcessHost's channel.
+  void AddFilter(IPC::ChannelProxy::MessageFilter* filter);
+
   // Tells the GPU process to create a new channel for communication with a
   // client. Once the GPU process responds asynchronously with the IPC handle
   // and GPUInfo, we call the callback.
   void EstablishGpuChannel(int client_id,
                            bool share_context,
                            const EstablishChannelCallback& callback);
 
   // Tells the GPU process to create a new command buffer that draws into the
   // given surface.
   void CreateViewCommandBuffer(
@@ skipping 126 matching lines @@
   static bool gpu_enabled_;
 
   static bool hardware_gpu_enabled_;
 
   scoped_ptr<BrowserChildProcessHostImpl> process_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessHost);
 };
 
 #endif  // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_