Add shutdown notification and service refs to SyncServiceObserver.

chrome/browser/sync/test/integration/p2p_sync_refresher.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/sync/test/integration/p2p_sync_refresher.h"
 
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/sync/test/integration/sync_datatype_helper.h"
 #include "chrome/browser/sync/test/integration/sync_test.h"
 #include "components/browser_sync/profile_sync_service.h"
 #include "components/sync/engine/cycle/sync_cycle_snapshot.h"
 #include "content/public/browser/notification_service.h"
 
 P2PSyncRefresher::P2PSyncRefresher(
     Profile* profile,
     browser_sync::ProfileSyncService* sync_service)
     : profile_(profile), sync_service_(sync_service) {
   sync_service_->AddObserver(this);
 }
 
 P2PSyncRefresher::~P2PSyncRefresher() {
   sync_service_->RemoveObserver(this);
 }
 
-void P2PSyncRefresher::OnStateChanged() {}
-
-void P2PSyncRefresher::OnSyncCycleCompleted() {
+void P2PSyncRefresher::OnSyncCycleCompleted(syncer::SyncService* sync) {
   const syncer::SyncCycleSnapshot& snap = sync_service_->GetLastCycleSnapshot();
   bool is_notifiable_commit =
       (snap.model_neutral_state().num_successful_commits > 0);
   if (is_notifiable_commit) {
     syncer::ModelTypeSet model_types =
         snap.model_neutral_state().commit_request_types;
     SyncTest* test = sync_datatype_helper::test();
     for (int i = 0; i < test->num_clients(); ++i) {
       if (profile_ != test->GetProfile(i))
         test->TriggerSyncForModelTypes(i, model_types);
     }
   }
 }