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

content/public/test/mock_render_thread.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/public/test/mock_render_thread.h"
 
 #include "base/message_loop/message_loop_proxy.h"
 #include "content/common/frame_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/renderer/render_process_observer.h"
@@ skipping 220 matching lines @@
       return true;
   }
   return OnMessageReceived(msg);
 }
 
 bool MockRenderThread::OnMessageReceived(const IPC::Message& msg) {
   // Save the message in the sink.
   sink_.OnMessageReceived(msg);
 
   bool handled = true;
-  bool msg_is_ok = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(MockRenderThread, msg, msg_is_ok)
+  IPC_BEGIN_MESSAGE_MAP(MockRenderThread, msg)
     IPC_MESSAGE_HANDLER(ViewHostMsg_CreateWidget, OnCreateWidget)
     IPC_MESSAGE_HANDLER(ViewHostMsg_CreateWindow, OnCreateWindow)
     IPC_MESSAGE_HANDLER(FrameHostMsg_CreateChildFrame, OnCreateChildFrame)
     IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP_EX()
+  IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 #if defined(OS_WIN)
 void MockRenderThread::OnDuplicateSection(
     base::SharedMemoryHandle renderer_handle,
     base::SharedMemoryHandle* browser_handle) {
   // We don't have to duplicate the input handles since RenderViewTest does not
   // separate a browser process from a renderer process.
   *browser_handle = renderer_handle;
 }
 #endif  // defined(OS_WIN)
 
 }  // namespace content