Add shutdown notification and service refs to SyncServiceObserver.

chrome/browser/sync/test/integration/p2p_sync_refresher.cc

Index: chrome/browser/sync/test/integration/p2p_sync_refresher.cc
diff --git a/chrome/browser/sync/test/integration/p2p_sync_refresher.cc b/chrome/browser/sync/test/integration/p2p_sync_refresher.cc
index 5c2adca3ae7480948a289daac60f2eececda85ea..a58fb0a30124d96e2a3a2996baf584c8b85f37c5 100644
--- a/chrome/browser/sync/test/integration/p2p_sync_refresher.cc
+++ b/chrome/browser/sync/test/integration/p2p_sync_refresher.cc
@@ -22,9 +22,7 @@ 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);