Add shutdown notification and service refs to SyncServiceObserver.

chrome/browser/ui/webui/settings/people_handler.cc

 // Copyright 2015 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/ui/webui/settings/people_handler.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 673 matching lines @@
                                           const std::string& /* username */,
                                           const std::string& /* password */) {
   UpdateSyncStatus();
 }
 
 void PeopleHandler::GoogleSignedOut(const std::string& /* account_id */,
                                     const std::string& /* username */) {
   UpdateSyncStatus();
 }
 
-void PeopleHandler::OnStateChanged() {
+void PeopleHandler::OnStateChanged(syncer::SyncService* sync) {
   UpdateSyncStatus();
 
   // When the SyncService changes its state, we should also push the updated
   // sync preferences.
   PushSyncPrefs();
 }
 
 std::unique_ptr<base::DictionaryValue>
 PeopleHandler::GetSyncStatusDictionary() {
   // The items which are to be written into |sync_status| are also described in
@@ skipping 209 matching lines @@
   base::FilePath profile_file_path = profile_->GetPath();
   ProfileMetrics::LogProfileSyncSignIn(profile_file_path);
 
   // We're done configuring, so notify ProfileSyncService that it is OK to
   // start syncing.
   sync_blocker_.reset();
   service->SetFirstSetupComplete();
 }
 
 }  // namespace settings