Add shutdown notification and service refs to SyncServiceObserver.

chrome/browser/supervised_user/supervised_user_service.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/supervised_user/supervised_user_service.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/feature_list.h"
@@ skipping 1239 matching lines @@
   result.Put(syncer::EXTENSIONS);
   result.Put(syncer::EXTENSION_SETTINGS);
   result.Put(syncer::APPS);
   result.Put(syncer::APP_SETTINGS);
   result.Put(syncer::APP_NOTIFICATIONS);
   result.Put(syncer::APP_LIST);
   return result;
 }
 
 #if !defined(OS_ANDROID)
-void SupervisedUserService::OnStateChanged() {
-  browser_sync::ProfileSyncService* service =
-      ProfileSyncServiceFactory::GetForProfile(profile_);
-  if (waiting_for_sync_initialization_ && service->IsEngineInitialized()) {
+void SupervisedUserService::OnStateChanged(syncer::SyncService* sync) {
+  if (waiting_for_sync_initialization_ && sync->IsEngineInitialized()) {
     waiting_for_sync_initialization_ = false;
-    service->RemoveObserver(this);
+    sync->RemoveObserver(this);
     FinishSetupSync();
     return;
   }
 
-  DLOG_IF(ERROR, service->GetAuthError().state() ==
+  DLOG_IF(ERROR, sync->GetAuthError().state() ==
                      GoogleServiceAuthError::INVALID_GAIA_CREDENTIALS)
       << "Credentials rejected";
 }
 
 void SupervisedUserService::OnBrowserSetLastActive(Browser* browser) {
   bool profile_became_active = profile_->IsSameProfile(browser->profile());
   if (!is_profile_active_ && profile_became_active)
     content::RecordAction(UserMetricsAction("ManagedUsers_OpenProfile"));
   else if (is_profile_active_ && !profile_became_active)
     content::RecordAction(UserMetricsAction("ManagedUsers_SwitchProfile"));
 
   is_profile_active_ = profile_became_active;
 }
 #endif  // !defined(OS_ANDROID)
 
 void SupervisedUserService::OnSiteListUpdated() {
   for (SupervisedUserServiceObserver& observer : observer_list_)
     observer.OnURLFilterChanged();
 }