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

content/browser/renderer_host/render_message_filter.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_MESSAGE_FILTER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_MESSAGE_FILTER_H_
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
@@ skipping 83 matching lines @@
                       RenderWidgetHelper* render_widget_helper,
                       media::AudioManager* audio_manager,
                       MediaInternals* media_internals,
                       DOMStorageContextWrapper* dom_storage_context);
 
   // IPC::MessageFilter methods:
   virtual void OnChannelClosing() OVERRIDE;
   virtual void OnChannelConnected(int32 peer_pid) OVERRIDE;
 
   // BrowserMessageFilter methods:
-  virtual bool OnMessageReceived(const IPC::Message& message,
-                                 bool* message_was_ok) OVERRIDE;
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void OnDestruct() const OVERRIDE;
   virtual base::TaskRunner* OverrideTaskRunnerForMessage(
       const IPC::Message& message) OVERRIDE;
 
   bool OffTheRecord() const;
 
   int render_process_id() const { return render_process_id_; }
 
   // Returns the correct net::CookieStore depending on what type of url is
   // given.
@@ skipping 207 matching lines @@
 #if defined(OS_MACOSX)
   base::ScopedCFTypeRef<CFTypeRef> last_io_surface_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(RenderMessageFilter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_MESSAGE_FILTER_H_