Add a new App launcher promo to the apps page / NTP.

chrome/browser/ui/webui/ntp/ntp_resource_cache.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_NTP_NTP_RESOURCE_CACHE_H_
 #define CHROME_BROWSER_UI_WEBUI_NTP_NTP_RESOURCE_CACHE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
@@ skipping 57 matching lines @@
   void CreateNewTabIncognitoHTML();
 
   void CreateNewTabIncognitoCSS();
 
   void CreateNewTabCSS();
 
   scoped_refptr<base::RefCountedMemory> new_tab_incognito_html_;
   scoped_refptr<base::RefCountedMemory> new_tab_incognito_css_;
   scoped_refptr<base::RefCountedMemory> new_tab_css_;
   content::NotificationRegistrar registrar_;
-  PrefChangeRegistrar pref_change_registrar_;
+  PrefChangeRegistrar profile_pref_change_registrar_;
+  PrefChangeRegistrar local_state_pref_change_registrar_;
 #endif
 
   // Set based on platform_util::IsSwipeTrackingFromScrollEventsEnabled.
   bool is_swipe_tracking_from_scroll_events_enabled_;
   // Set based on extensions::IsAppLauncherEnabled.
   bool should_show_apps_page_;
   // The next three all default to true and can be manually set, e.g., by the
   // chrome://apps page.
   bool should_show_most_visited_page_;
   bool should_show_other_devices_menu_;
   bool should_show_recently_closed_menu_;
 
   DISALLOW_COPY_AND_ASSIGN(NTPResourceCache);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_NTP_RESOURCE_CACHE_H_