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

components/cdm/browser/cdm_message_filter_android.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 COMPONENTS_CDM_BROWSER_CDM_MESSAGE_FILTER_ANDROID_H_
 #define COMPONENTS_CDM_BROWSER_CDM_MESSAGE_FILTER_ANDROID_H_
 
 #include "base/basictypes.h"
 #include "content/public/browser/browser_message_filter.h"
 
 struct SupportedKeySystemRequest;
 struct SupportedKeySystemResponse;
 
 namespace cdm {
 
 // Message filter for EME on android. It is responsible for getting the
 // SupportedKeySystems information and passing it back to renderer.
 class CdmMessageFilterAndroid
     : public content::BrowserMessageFilter {
  public:
   CdmMessageFilterAndroid();
 
  private:
   virtual ~CdmMessageFilterAndroid();
 
   // BrowserMessageFilter implementation.
-  virtual bool OnMessageReceived(const IPC::Message& message,
-                                 bool* message_was_ok) OVERRIDE;
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void OverrideThreadForMessage(
       const IPC::Message& message,
       content::BrowserThread::ID* thread) OVERRIDE;
 
   // Retrieve the supported key systems.
   void OnGetSupportedKeySystems(
       const SupportedKeySystemRequest& request,
       SupportedKeySystemResponse* response);
 
   DISALLOW_COPY_AND_ASSIGN(CdmMessageFilterAndroid);
 };
 
 }  // namespace cdm
 
 #endif  // COMPONENTS_CDM_BROWSER_CDM_MESSAGE_FILTER_ANDROID_H_