Show a different banner in chrome://settings for extension-controlled settings.

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:
-  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_