Make IPC::Channel::Listener:OnMessageReceived have a return value indicating ...

chrome/gpu/gpu_thread.cc

 // 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.
 
 #include "chrome/gpu/gpu_thread.h"
 
 #include <string>
 #include <vector>
 
 #include "app/gfx/gl/gl_context.h"
@@ skipping 34 matching lines @@
 
   // Record initialization only after collecting the GPU info because that can
   // take a significant amount of time.
   gpu_info_.SetInitializationTime(base::Time::Now() - process_start_time);
 }
 
 void GpuThread::RemoveChannel(int renderer_id) {
   gpu_channels_.erase(renderer_id);
 }
 
-void GpuThread::OnControlMessageReceived(const IPC::Message& msg) {
+bool GpuThread::OnControlMessageReceived(const IPC::Message& msg) {
   bool msg_is_ok = true;
+  bool handled = true;
   IPC_BEGIN_MESSAGE_MAP_EX(GpuThread, msg, msg_is_ok)
     IPC_MESSAGE_HANDLER(GpuMsg_EstablishChannel, OnEstablishChannel)
     IPC_MESSAGE_HANDLER(GpuMsg_CloseChannel, OnCloseChannel)
     IPC_MESSAGE_HANDLER(GpuMsg_Synchronize, OnSynchronize)
     IPC_MESSAGE_HANDLER(GpuMsg_CollectGraphicsInfo, OnCollectGraphicsInfo)
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(GpuMsg_AcceleratedSurfaceBuffersSwappedACK,
                         OnAcceleratedSurfaceBuffersSwappedACK)
     IPC_MESSAGE_HANDLER(GpuMsg_DidDestroyAcceleratedSurface,
                         OnDidDestroyAcceleratedSurface)
 #endif
     IPC_MESSAGE_HANDLER(GpuMsg_Crash, OnCrash)
     IPC_MESSAGE_HANDLER(GpuMsg_Hang, OnHang)
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP_EX()
+  return handled;
 }
 
 void GpuThread::OnEstablishChannel(int renderer_id) {
   scoped_refptr<GpuChannel> channel;
   IPC::ChannelHandle channel_handle;
   GPUInfo gpu_info;
 
   GpuChannelMap::const_iterator iter = gpu_channels_.find(renderer_id);
   if (iter == gpu_channels_.end())
     channel = new GpuChannel(renderer_id);
@@ skipping 85 matching lines @@
       NewRunnableFunction(&GpuThread::SetDxDiagnostics, thread, node));
 }
 
 // Runs on the GPU thread.
 void GpuThread::SetDxDiagnostics(GpuThread* thread, const DxDiagNode& node) {
   thread->gpu_info_.SetDxDiagnostics(node);
   thread->gpu_info_.SetProgress(GPUInfo::kComplete);
 }
 
 #endif