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

content/browser/frame_host/render_frame_message_filter.h

 // Copyright 2013 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_FRAME_HOST_RENDER_FRAME_MESSAGE_FILTER_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_MESSAGE_FILTER_H_
 
 #include "content/public/browser/browser_message_filter.h"
 
 namespace content {
 class RenderWidgetHelper;
 
 // RenderFrameMessageFilter intercepts FrameHost messages on the IO thread
 // that require low-latency processing. The canonical example of this is
 // child-frame creation which is a sync IPC that provides the renderer
 // with the routing id for a newly created RenderFrame.
 //
 // This object is created on the UI thread and used on the IO thread.
 class RenderFrameMessageFilter : public BrowserMessageFilter {
  public:
   RenderFrameMessageFilter(int render_process_id,
                            RenderWidgetHelper* render_widget_helper);
 
-  virtual bool OnMessageReceived(const IPC::Message& message,
-                                 bool* message_was_ok) OVERRIDE;
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
  private:
   virtual ~RenderFrameMessageFilter();
 
   void OnCreateChildFrame(int parent_routing_id,
                           const std::string& frame_name,
                           int* new_render_frame_id);
 
   const int render_process_id_;
 
   // Needed for issuing routing ids and surface ids.
   scoped_refptr<RenderWidgetHelper> render_widget_helper_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_MESSAGE_FILTER_H_