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

content/browser/renderer_host/pepper/pepper_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_PEPPER_PEPPER_MESSAGE_FILTER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_MESSAGE_FILTER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/browser_message_filter.h"
 
 namespace ppapi {
 class PPB_X509Certificate_Fields;
 }
 
 namespace content {
 
 // Message filter that handles IPC for PPB_X509Certificate_Private.
 class PepperMessageFilter : public BrowserMessageFilter {
  public:
   PepperMessageFilter();
 
   // BrowserMessageFilter methods.
-  virtual bool OnMessageReceived(const IPC::Message& message,
-                                 bool* message_was_ok) OVERRIDE;
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
  protected:
   virtual ~PepperMessageFilter();
 
  private:
   void OnX509CertificateParseDER(const std::vector<char>& der,
                                  bool* succeeded,
                                  ppapi::PPB_X509Certificate_Fields* result);
 
   DISALLOW_COPY_AND_ASSIGN(PepperMessageFilter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_MESSAGE_FILTER_H_