Use PrefChangeRegistrar everywhere

chrome/browser/gtk/options/general_page_gtk.h

 // Copyright (c) 2010 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_GTK_OPTIONS_GENERAL_PAGE_GTK_H_
 #define CHROME_BROWSER_GTK_OPTIONS_GENERAL_PAGE_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
 #include <string>
 
 #include "app/gtk_signal.h"
 #include "chrome/browser/gtk/gtk_tree.h"
 #include "chrome/browser/gtk/options/managed_prefs_banner_gtk.h"
 #include "chrome/browser/options_page_base.h"
+#include "chrome/browser/prefs/pref_change_registrar.h"
 #include "chrome/browser/prefs/pref_member.h"
 #include "chrome/browser/search_engines/template_url_model_observer.h"
 #include "chrome/browser/shell_integration.h"
 #include "googleurl/src/gurl.h"
 
 class AccessibleWidgetHelper;
 class CustomHomePagesTableModel;
 class Profile;
 class TemplateURLModel;
 
@@ skipping 126 matching lines @@
 
   // The helper object that performs default browser set/check tasks.
   scoped_refptr<ShellIntegration::DefaultBrowserWorker> default_browser_worker_;
 
   // Helper object to manage accessibility metadata.
   scoped_ptr<AccessibleWidgetHelper> accessible_widget_helper_;
 
   // Tracks managed preference warning banner state.
   ManagedPrefsBannerGtk managed_prefs_banner_;
 
+  PrefChangeRegistrar registrar_;
+
   DISALLOW_COPY_AND_ASSIGN(GeneralPageGtk);
 };
 
 #endif  // CHROME_BROWSER_GTK_OPTIONS_GENERAL_PAGE_GTK_H_