Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/extensions/extension_web_ui.cc

Index: chrome/browser/extensions/extension_web_ui.cc
diff --git a/chrome/browser/extensions/extension_web_ui.cc b/chrome/browser/extensions/extension_web_ui.cc
index 144787007af5c341d57f10a43f3c92a9803b24c9..e272bdec4c25c4d981f4667a6d2d6dedd705f957 100644
--- a/chrome/browser/extensions/extension_web_ui.cc
+++ b/chrome/browser/extensions/extension_web_ui.cc
@@ -191,9 +191,9 @@ ExtensionWebUI::bookmark_manager_extension_event_router() {
 // chrome:// URL overrides
 
 // static
-void ExtensionWebUI::RegisterUserPrefs(PrefService* prefs) {
+void ExtensionWebUI::RegisterUserPrefs(PrefServiceSyncable* prefs) {
   prefs->RegisterDictionaryPref(kExtensionURLOverrides,
-                                PrefService::UNSYNCABLE_PREF);
+                                PrefServiceSyncable::UNSYNCABLE_PREF);
 }
 
 // static