Send vsync timebase updates to the browser compositor

content/browser/gpu/gpu_process_host.cc

 // 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.
 
 #include "content/browser/gpu/gpu_process_host.h"
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
@@ skipping 451 matching lines @@
     queued_messages_.push(msg);
     return true;
   }
 
   bool result = process_->Send(msg);
   if (!result)
     valid_ = false;
   return result;
 }
 
+void GpuProcessHost::AddFilter(IPC::ChannelProxy::MessageFilter* filter) {
+  DCHECK(CalledOnValidThread());
+  process_->GetHost()->AddFilter(filter);
+}
+
 bool GpuProcessHost::OnMessageReceived(const IPC::Message& message) {
   DCHECK(CalledOnValidThread());
   IPC_BEGIN_MESSAGE_MAP(GpuProcessHost, message)
     IPC_MESSAGE_HANDLER(GpuHostMsg_Initialized, OnInitialized)
     IPC_MESSAGE_HANDLER(GpuHostMsg_ChannelEstablished, OnChannelEstablished)
     IPC_MESSAGE_HANDLER(GpuHostMsg_CommandBufferCreated, OnCommandBufferCreated)
     IPC_MESSAGE_HANDLER(GpuHostMsg_DestroyCommandBuffer, OnDestroyCommandBuffer)
     IPC_MESSAGE_HANDLER(GpuHostMsg_ImageCreated, OnImageCreated)
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(GpuHostMsg_AcceleratedSurfaceBuffersSwapped,
@@ skipping 469 matching lines @@
     const CreateCommandBufferCallback& callback, int32 route_id) {
   callback.Run(route_id);
 }
 
 void GpuProcessHost::CreateImageError(
     const CreateImageCallback& callback, const gfx::Size size) {
   callback.Run(size);
 }
 
 }  // namespace content