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

chrome/renderer/gpu_video_decoder_host.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/renderer/gpu_video_decoder_host.h"
 
 #include "chrome/common/gpu_messages.h"
 #include "chrome/common/message_router.h"
 #include "media/video/video_decode_context.h"
 
@@ skipping 14 matching lines @@
       current_frame_id_(0) {
   memset(&config_, 0, sizeof(config_));
 }
 
 GpuVideoDecoderHost::~GpuVideoDecoderHost() {}
 
 void GpuVideoDecoderHost::OnChannelError() {
   ipc_sender_ = NULL;
 }
 
-void GpuVideoDecoderHost::OnMessageReceived(const IPC::Message& msg) {
+bool GpuVideoDecoderHost::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(GpuVideoDecoderHost, msg)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_CreateVideoDecoderDone,
                         OnCreateVideoDecoderDone)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_InitializeACK,
                         OnInitializeDone)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_DestroyACK,
                         OnUninitializeDone)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_FlushACK,
                         OnFlushDone)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_PrerollDone,
                         OnPrerollDone)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_EmptyThisBufferACK,
                         OnEmptyThisBufferACK)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_EmptyThisBufferDone,
                         OnProduceVideoSample)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_ConsumeVideoFrame,
                         OnConsumeVideoFrame)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_AllocateVideoFrames,
                         OnAllocateVideoFrames)
     IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_ReleaseAllVideoFrames,
                         OnReleaseAllVideoFrames)
-    IPC_MESSAGE_UNHANDLED_ERROR()
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
+  DCHECK(handled);
+  return handled;
 }
 
 void GpuVideoDecoderHost::Initialize(
     MessageLoop* message_loop, VideoDecodeEngine::EventHandler* event_handler,
     media::VideoDecodeContext* context, const media::VideoCodecConfig& config) {
   if (MessageLoop::current() != message_loop) {
     message_loop->PostTask(
         FROM_HERE,
         NewRunnableMethod(this, &GpuVideoDecoderHost::Initialize, message_loop,
                           event_handler, context, config));
@@ skipping 310 matching lines @@
   }
 
   DCHECK(found) << "Invalid video frame received";
   if (found && !ipc_sender_->Send(
           new GpuVideoDecoderMsg_ProduceVideoFrame(decoder_id_, frame_id))) {
     LOG(ERROR) << "GpuVideoDecoderMsg_ProduceVideoFrame failed";
   }
 }
 
 DISABLE_RUNNABLE_METHOD_REFCOUNT(GpuVideoDecoderHost);