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

content/browser/screen_orientation/screen_orientation_dispatcher_host.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_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DISPATCHER_HOST_H_
 
 #include "content/public/browser/browser_message_filter.h"
 #include "third_party/WebKit/public/platform/WebScreenOrientationLockType.h"
 #include "third_party/WebKit/public/platform/WebScreenOrientationType.h"
 
 namespace content {
 
 class ScreenOrientationProvider;
 
 // ScreenOrientationDispatcherHost is a browser filter for Screen Orientation
 // messages and also helps dispatching messages about orientation changes to the
 // renderers.
 class CONTENT_EXPORT ScreenOrientationDispatcherHost
     : public BrowserMessageFilter {
  public:
   ScreenOrientationDispatcherHost();
 
   // BrowserMessageFilter
-  virtual bool OnMessageReceived(const IPC::Message&, bool*) OVERRIDE;
+  virtual bool OnMessageReceived(const IPC::Message&) OVERRIDE;
 
   void OnOrientationChange(blink::WebScreenOrientationType orientation);
 
   void SetProviderForTests(ScreenOrientationProvider* provider);
 
  private:
   virtual ~ScreenOrientationDispatcherHost();
 
   void OnLockRequest(blink::WebScreenOrientationLockType orientations);
   void OnUnlockRequest();
 
   static ScreenOrientationProvider* CreateProvider();
 
   scoped_ptr<ScreenOrientationProvider> provider_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenOrientationDispatcherHost);
 };
 
 }  // namespace content
 
 #endif // CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DISPATCHER_HOST_H_