Add shutdown notification and service refs to SyncServiceObserver.

chrome/browser/extensions/external_pref_loader.cc

Index: chrome/browser/extensions/external_pref_loader.cc
diff --git a/chrome/browser/extensions/external_pref_loader.cc b/chrome/browser/extensions/external_pref_loader.cc
index 1d257b23a7c1e480860e363ffd4311e5bf0e4583..76c3c799d605b9ed29f7f170fec55d48d26b7ed5 100644
--- a/chrome/browser/extensions/external_pref_loader.cc
+++ b/chrome/browser/extensions/external_pref_loader.cc
@@ -154,11 +154,8 @@ void ExternalPrefLoader::OnIsSyncingChanged() {
   PostLoadIfPrioritySyncReady();
 }
 
-void ExternalPrefLoader::OnStateChanged() {
-  browser_sync::ProfileSyncService* service =
-      ProfileSyncServiceFactory::GetForProfile(profile_);
-  DCHECK(service);
-  if (!service->CanSyncStart()) {
+void ExternalPrefLoader::OnStateChanged(syncer::SyncService* sync) {
+  if (!sync->CanSyncStart()) {

[sky, 2017/01/27 16:29:44]

remove {}

[Steven Holte, 2017/01/27 20:11:45]

Done.

     PostLoadAndRemoveObservers();
   }
 }