WebUI: Move the core files of WebUI from chrome/browser/webui to content/webui.

content/browser/webui/web_ui.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_WEBUI_WEB_UI_H_
-#define CHROME_BROWSER_WEBUI_WEB_UI_H_
+#ifndef CONTENT_BROWSER_WEBUI_WEB_UI_H_
+#define CONTENT_BROWSER_WEBUI_WEB_UI_H_
 #pragma once
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/string16.h"
 #include "chrome/common/page_transition_types.h"
 
@@ skipping 194 matching lines @@
 
   // Extract a string value from a list Value.
   std::wstring ExtractStringValue(const ListValue* value);
 
   WebUI* web_ui_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebUIMessageHandler);
 };
 
-#endif  // CHROME_BROWSER_WEBUI_WEB_UI_H_
+#endif  // CONTENT_BROWSER_WEBUI_WEB_UI_H_