Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/extensions/default_apps.cc

Index: chrome/browser/extensions/default_apps.cc
diff --git a/chrome/browser/extensions/default_apps.cc b/chrome/browser/extensions/default_apps.cc
index 3583416cf381dbe818478594d9d256cb4b1021b3..604f0cd7783aa3b8ac005099a07f03a81afcb47d 100644
--- a/chrome/browser/extensions/default_apps.cc
+++ b/chrome/browser/extensions/default_apps.cc
@@ -48,9 +48,9 @@ bool IsLocaleSupported() {
 
 namespace default_apps {
 
-void RegisterUserPrefs(PrefService* prefs) {
+void RegisterUserPrefs(PrefServiceSyncable* prefs) {
   prefs->RegisterIntegerPref(prefs::kDefaultAppsInstallState, kUnknown,
-                             PrefService::UNSYNCABLE_PREF);
+                             PrefServiceSyncable::UNSYNCABLE_PREF);
 }
 
 bool Provider::ShouldInstallInProfile() {