Allow device policy code to be optionally included.

chrome/browser/ui/webui/options/options_managed_banner_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_OPTIONS_OPTIONS_MANAGED_BANNER_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_OPTIONS_MANAGED_BANNER_HANDLER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/string16.h"
 #include "chrome/browser/policy/managed_prefs_banner_base.h"
 #include "chrome/browser/ui/options/options_util.h"
 
 class WebUI;
 
 // Managed options banner handler.
 // Controls the display of a banner if an options panel contains options
 // that are under administator control.
 class OptionsManagedBannerHandler : public policy::ManagedPrefsBannerBase {
  public:
-  OptionsManagedBannerHandler(WebUI* web_ui,
-                              const string16& page_name,
-                              OptionsPage page);
+  static OptionsManagedBannerHandler* Create(WebUI* web_ui,
+                                             const string16& page_name,
+                                             OptionsPage page);
   virtual ~OptionsManagedBannerHandler();
 
  protected:
   // ManagedPrefsBannerBase implementation.
   virtual void OnUpdateVisibility();
 
  private:
+  OptionsManagedBannerHandler(WebUI* web_ui,
+                              const string16& page_name,
+                              OptionsPage page);
+
   // Set the managed options banner to be visible or invisible.
   void SetupBannerVisibility();
 
   WebUI* web_ui_;  // weak reference to the WebUI.
   string16 page_name_;  // current options page name.
   OptionsPage page_;  // current options page value.
 
   DISALLOW_COPY_AND_ASSIGN(OptionsManagedBannerHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_OPTIONS_MANAGED_BANNER_HANDLER_H_