RemoveSyncPrefObserver  228 chrome/browser/sync/profile_sync_service.cc   sync_prefs_.RemoveSyncPrefObserver(this);
RemoveSyncPrefObserver   62 components/sync_driver/sync_prefs.h   void RemoveSyncPrefObserver(SyncPrefObserver* sync_pref_observer);
RemoveSyncPrefObserver  251 components/sync_driver/sync_prefs_unittest.cc   sync_prefs.RemoveSyncPrefObserver(&mock_sync_pref_observer);