Remove IPC_BEGIN_MESSAGE_MAP_EX macro since r270839 made all bad IPCs kill their child processes.

content/browser/renderer_host/media/audio_renderer_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/renderer_host/media/audio_renderer_host.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/shared_memory.h"
 #include "base/metrics/histogram.h"
@@ skipping 282 matching lines @@
     AudioEntry* entry = it->second;
     if (entry->render_view_id() == render_view_id)
       controllers.push_back(entry->controller());
   }
 
   return controllers;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // IPC Messages handler
-bool AudioRendererHost::OnMessageReceived(const IPC::Message& message,
-                                          bool* message_was_ok) {
+bool AudioRendererHost::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(AudioRendererHost, message, *message_was_ok)
+  IPC_BEGIN_MESSAGE_MAP(AudioRendererHost, message)
     IPC_MESSAGE_HANDLER(AudioHostMsg_CreateStream, OnCreateStream)
     IPC_MESSAGE_HANDLER(AudioHostMsg_PlayStream, OnPlayStream)
     IPC_MESSAGE_HANDLER(AudioHostMsg_PauseStream, OnPauseStream)
     IPC_MESSAGE_HANDLER(AudioHostMsg_CloseStream, OnCloseStream)
     IPC_MESSAGE_HANDLER(AudioHostMsg_SetVolume, OnSetVolume)
     IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP_EX()
+  IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
 void AudioRendererHost::OnCreateStream(
     int stream_id, int render_view_id, int render_frame_id, int session_id,
     const media::AudioParameters& params) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   DVLOG(1) << "AudioRendererHost@" << this
@@ skipping 154 matching lines @@
 }
 
 AudioRendererHost::AudioEntry* AudioRendererHost::LookupById(int stream_id) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   AudioEntryMap::const_iterator i = audio_entries_.find(stream_id);
   return i != audio_entries_.end() ? i->second : NULL;
 }
 
 }  // namespace content