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

content/browser/push_messaging_message_filter.h

 // Copyright 2014 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_PUSH_MESSAGING_MESSAGE_FILTER_H_
 #define CONTENT_BROWSER_PUSH_MESSAGING_MESSAGE_FILTER_H_
 
 #include <string>
 
 #include "content/public/browser/browser_message_filter.h"
 #include "url/gurl.h"
 
 namespace content {
 
 class PushMessagingMessageFilter : public BrowserMessageFilter {
  public:
   PushMessagingMessageFilter();
 
  private:
   virtual ~PushMessagingMessageFilter();
 
   // BrowserMessageFilter implementation.
-  virtual bool OnMessageReceived(const IPC::Message& message,
-                                 bool* message_was_ok) OVERRIDE;
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   void OnRegister(int routing_id,
                   int callbacks_id,
                   const std::string& sender_id);
 
   void DidRegister(int routing_id,
                    int callbacks_id,
                    const GURL& endpoint,
                    const std::string& registration_id,
                    bool error);
 
   DISALLOW_COPY_AND_ASSIGN(PushMessagingMessageFilter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_PUSH_MESSAGING_MESSAGE_FILTER_H_