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

chrome/browser/ui/webui/policy_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_UI_WEBUI_POLICY_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_POLICY_UI_H_
 #pragma once
 
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "chrome/browser/policy/cloud_policy_subsystem.h"
 #include "chrome/browser/policy/configuration_policy_reader.h"
 #include "chrome/browser/ui/webui/chrome_web_ui.h"
+#include "content/public/browser/web_ui_message_handler.h"
 
 namespace policy {
 class CloudPolicyDataStore;
 }
 
 // The base class handler of Javascript messages of the about:policy page.
-class PolicyUIHandler : public WebUIMessageHandler,
+class PolicyUIHandler : public content::WebUIMessageHandler,
                         public policy::PolicyStatus::Observer {
  public:
   PolicyUIHandler();
   virtual ~PolicyUIHandler();
 
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages() OVERRIDE;
 
   // policy::PolicyStatus::Observer implementation.
   virtual void OnPolicyValuesChanged() OVERRIDE;
@@ skipping 41 matching lines @@
 class PolicyUI : public ChromeWebUI {
  public:
   explicit PolicyUI(content::WebContents* contents);
   virtual ~PolicyUI();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PolicyUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_POLICY_UI_H_