Display an info banner on the clear browsing data dialog if the browsing data was cleared within th…

chrome/browser/ui/webui/options/clear_browser_data_handler.h

 // Copyright (c) 2012 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_CLEAR_BROWSER_DATA_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_CLEAR_BROWSER_DATA_HANDLER_H_
 
 #include "base/prefs/public/pref_member.h"
 #include "chrome/browser/browsing_data/browsing_data_remover.h"
 #include "chrome/browser/ui/webui/options/options_ui.h"
 
 namespace options {
 
 // Clear browser data handler page UI handler.
 class ClearBrowserDataHandler : public OptionsPageUIHandler,
                                 public BrowsingDataRemover::Observer {
  public:
   ClearBrowserDataHandler();
   virtual ~ClearBrowserDataHandler();
 
   // OptionsPageUIHandler implementation.
   virtual void GetLocalizedValues(DictionaryValue* localized_strings) OVERRIDE;
   virtual void InitializeHandler() OVERRIDE;
+  virtual void InitializePage() OVERRIDE;
 
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages() OVERRIDE;
 
+  void UpdateInfoBannerVisibility();
+
  private:
   // Javascript callback to start clearing data.
   void HandleClearBrowserData(const ListValue* value);
 
   // BrowsingDataRemover::Observer implementation.
   // Closes the dialog once all requested data has been removed.
   virtual void OnBrowsingDataRemoverDone() OVERRIDE;
 
   // If non-null it means removal is in progress. BrowsingDataRemover takes care
   // of deleting itself when done.
   BrowsingDataRemover* remover_;
 
   // Keeps track of whether clearing LSO data is supported.
   BooleanPrefMember clear_plugin_lso_data_enabled_;
 
   // Keeps track of whether Pepper Flash is enabled and thus Flapper-specific
   // settings and removal options (e.g. Content Licenses) are available.
   BooleanPrefMember pepper_flash_settings_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(ClearBrowserDataHandler);
 };
 
 }  // namespace options
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_CLEAR_BROWSER_DATA_HANDLER_H_