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

chrome/gpu/gpu_video_decoder.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_video_decoder.h"
 
 #include "base/command_line.h"
 #include "chrome/common/child_thread.h"
 #include "chrome/common/gpu_messages.h"
 #include "chrome/gpu/gpu_channel.h"
@@ skipping 17 matching lines @@
   std::vector<scoped_refptr<media::VideoFrame> >* frames;
   Task* task;
 };
 
 void GpuVideoDecoder::OnChannelConnected(int32 peer_pid) {
 }
 
 void GpuVideoDecoder::OnChannelError() {
 }
 
-void GpuVideoDecoder::OnMessageReceived(const IPC::Message& msg) {
+bool GpuVideoDecoder::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(GpuVideoDecoder, msg)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderMsg_Initialize,
                         OnInitialize)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderMsg_Destroy,
                         OnUninitialize)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderMsg_Flush,
                         OnFlush)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderMsg_Preroll,
                         OnPreroll)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderMsg_EmptyThisBuffer,
                         OnEmptyThisBuffer)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderMsg_ProduceVideoFrame,
                         OnProduceVideoFrame)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderMsg_VideoFrameAllocated,
                         OnVideoFrameAllocated)
-    IPC_MESSAGE_UNHANDLED_ERROR()
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
+  DCHECK(handled);
+  return handled;
 }
 
 bool GpuVideoDecoder::CreateInputTransferBuffer(
     uint32 size,
     base::SharedMemoryHandle* handle) {
   input_transfer_buffer_.reset(new base::SharedMemory);
   if (!input_transfer_buffer_.get())
     return false;
 
   if (!input_transfer_buffer_->CreateAndMapAnonymous(size))
@@ skipping 339 matching lines @@
   }
 }
 
 void GpuVideoDecoder::SendReleaseAllVideoFrames() {
   if (!sender_->Send(
           new GpuVideoDecoderHostMsg_ReleaseAllVideoFrames(
               decoder_host_id()))) {
     LOG(ERROR) << "GpuVideoDecoderMsg_ReleaseAllVideoFrames failed";
   }
 }