Add shutdown notification and service refs to SyncServiceObserver.

chrome/browser/android/foreign_session_helper.cc

Index: chrome/browser/android/foreign_session_helper.cc
diff --git a/chrome/browser/android/foreign_session_helper.cc b/chrome/browser/android/foreign_session_helper.cc
index a81f9326333fa52e7608727c9b93510ac02b8047..17006b71dad6c0b7854972b5c587a1d29a19f936 100644
--- a/chrome/browser/android/foreign_session_helper.cc
+++ b/chrome/browser/android/foreign_session_helper.cc
@@ -196,11 +196,12 @@ void ForeignSessionHelper::FireForeignSessionCallback() {
   Java_ForeignSessionCallback_onUpdated(env, callback_);
 }
 
-void ForeignSessionHelper::OnSyncConfigurationCompleted() {
+void ForeignSessionHelper::OnSyncConfigurationCompleted(
+    syncer::SyncService* sync) {
   FireForeignSessionCallback();
 }
 
-void ForeignSessionHelper::OnForeignSessionUpdated() {
+void ForeignSessionHelper::OnForeignSessionUpdated(syncer::SyncService* sync) {
   FireForeignSessionCallback();
 }