Move WebUIMessageHandler to its own file in the public directory and put it in the content namesp...

chrome/browser/ui/webui/media/media_internals_handler.h

 // Copyright (c) 2011 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 CHROME_BROWSER_UI_WEBUI_MEDIA_MEDIA_INTERNALS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_MEDIA_MEDIA_INTERNALS_HANDLER_H_
 #pragma once
 
-#include "chrome/browser/ui/webui/chrome_web_ui.h"
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "content/public/browser/web_ui_message_handler.h"
 
 class MediaInternalsProxy;
 
 namespace base {
 class ListValue;
 }
 
 // This class handles messages to and from MediaInternalsUI.
 // It does all its work on the IO thread through the proxy below.
-class MediaInternalsMessageHandler : public WebUIMessageHandler {
+class MediaInternalsMessageHandler : public content::WebUIMessageHandler {
  public:
   MediaInternalsMessageHandler();
   virtual ~MediaInternalsMessageHandler();
 
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages() OVERRIDE;
 
   // Javascript message handlers.
   void OnGetEverything(const base::ListValue* list);
 
   // MediaInternals message handlers.
   void OnUpdate(const string16& update);
 
  private:
   scoped_refptr<MediaInternalsProxy> proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaInternalsMessageHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_MEDIA_MEDIA_INTERNALS_HANDLER_H_