Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/web_resource/notification_promo.cc

Index: chrome/browser/web_resource/notification_promo.cc
diff --git a/chrome/browser/web_resource/notification_promo.cc b/chrome/browser/web_resource/notification_promo.cc
index 86687f58795ec04f8bcc4dd5c35bb56d8bdfc34c..692d305233835fd197ddc18b0cfb9250ebe989ff 100644
--- a/chrome/browser/web_resource/notification_promo.cc
+++ b/chrome/browser/web_resource/notification_promo.cc
@@ -316,10 +316,10 @@ void NotificationPromo::OnNewNotification() {
 }
 
 // static
-void NotificationPromo::RegisterUserPrefs(PrefService* prefs) {
+void NotificationPromo::RegisterUserPrefs(PrefServiceSyncable* prefs) {
   prefs->RegisterDictionaryPref(kPrefPromoObject,
                                 new base::DictionaryValue,
-                                PrefService::UNSYNCABLE_PREF);
+                                PrefServiceSyncable::UNSYNCABLE_PREF);
 }
 
 void NotificationPromo::WritePrefs() {