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

chrome/browser/ui/webui/chromeos/login/base_screen_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_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_H_
 #pragma once
 
-#include "content/browser/webui/web_ui.h"
+#include "content/public/browser/web_ui_message_handler.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace chromeos {
 
 // Base class for the OOBE/Login WebUI handlers.
-class BaseScreenHandler : public WebUIMessageHandler {
+class BaseScreenHandler : public content::WebUIMessageHandler {
  public:
   BaseScreenHandler();
   virtual ~BaseScreenHandler();
 
   // Gets localized strings to be used on the page.
   virtual void GetLocalizedStrings(
       base::DictionaryValue* localized_strings) = 0;
 
   // This method is called when page is ready. It propagates to inherited class
   // via virtual Initialize() method (see below).
@@ skipping 16 matching lines @@
  private:
   // Keeps whether page is ready.
   bool page_is_ready_;
 
   DISALLOW_COPY_AND_ASSIGN(BaseScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_H_