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

ppapi/proxy/ppb_audio_proxy.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 "ppapi/proxy/ppb_audio_proxy.h"
 
 #include "base/simple_thread.h"
 #include "ppapi/c/dev/ppb_audio_dev.h"
 #include "ppapi/c/dev/ppb_audio_trusted_dev.h"
 #include "ppapi/c/pp_errors.h"
@@ skipping 114 matching lines @@
 }
 
 const void* PPB_Audio_Proxy::GetSourceInterface() const {
   return &audio_interface;
 }
 
 InterfaceID PPB_Audio_Proxy::GetInterfaceId() const {
   return INTERFACE_ID_PPB_AUDIO;
 }
 
-void PPB_Audio_Proxy::OnMessageReceived(const IPC::Message& msg) {
+bool PPB_Audio_Proxy::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_Audio_Proxy, msg)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBAudio_Create, OnMsgCreate)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBAudio_StartOrStop,
                         OnMsgStartOrStop)
-
     IPC_MESSAGE_HANDLER(PpapiMsg_PPBAudio_NotifyAudioStreamCreated,
                         OnMsgNotifyAudioStreamCreated)
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
+  return handled;
 }
 
 void PPB_Audio_Proxy::OnMsgCreate(PP_Instance instance_id,
                                   PP_Resource config_id,
                                   PP_Resource* result) {
   const PPB_AudioTrusted_Dev* audio_trusted =
       reinterpret_cast<const PPB_AudioTrusted_Dev*>(
           dispatcher()->GetLocalInterface(PPB_AUDIO_TRUSTED_DEV_INTERFACE));
   if (!audio_trusted) {
     *result = 0;
@@ skipping 122 matching lines @@
   // close the source handle.
   if (!shared_memory.GiveToProcess(dispatcher()->remote_process_handle(),
                                    foreign_shared_memory_handle))
     return PP_ERROR_FAILED;
 
   return PP_OK;
 }
 
 }  // namespace proxy
 }  // namespace pp