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

content/browser/renderer_host/media/audio_input_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_input_renderer_host.h"
 
 #include "base/bind.h"
 #include "base/memory/shared_memory.h"
 #include "base/metrics/histogram.h"
 #include "base/numerics/safe_math.h"
@@ skipping 187 matching lines @@
   }
 
   AudioEntry* entry = LookupByController(controller);
   if (!entry)
     return;
 
   audio_log_->OnError(entry->stream_id);
   DeleteEntryOnError(entry, AUDIO_INPUT_CONTROLLER_ERROR);
 }
 
-bool AudioInputRendererHost::OnMessageReceived(const IPC::Message& message,
-                                               bool* message_was_ok) {
+bool AudioInputRendererHost::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(AudioInputRendererHost, message, *message_was_ok)
+  IPC_BEGIN_MESSAGE_MAP(AudioInputRendererHost, message)
     IPC_MESSAGE_HANDLER(AudioInputHostMsg_CreateStream, OnCreateStream)
     IPC_MESSAGE_HANDLER(AudioInputHostMsg_RecordStream, OnRecordStream)
     IPC_MESSAGE_HANDLER(AudioInputHostMsg_CloseStream, OnCloseStream)
     IPC_MESSAGE_HANDLER(AudioInputHostMsg_SetVolume, OnSetVolume)
     IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP_EX()
+  IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
 void AudioInputRendererHost::OnCreateStream(
     int stream_id,
     int render_view_id,
     int session_id,
     const AudioInputHostMsg_CreateStream_Config& config) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
@@ skipping 212 matching lines @@
   // TODO(hclam): Implement a faster look up method.
   for (AudioEntryMap::iterator i = audio_entries_.begin();
        i != audio_entries_.end(); ++i) {
     if (controller == i->second->controller.get())
       return i->second;
   }
   return NULL;
 }
 
 }  // namespace content