Add shutdown notification and service refs to SyncServiceObserver.

chrome/browser/ui/webui/foreign_session_handler.cc

 // Copyright (c) 2012 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/foreign_session_handler.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 211 matching lines @@
       base::Bind(&ForeignSessionHandler::HandleGetForeignSessions,
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback("openForeignSession",
       base::Bind(&ForeignSessionHandler::HandleOpenForeignSession,
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback("setForeignSessionCollapsed",
       base::Bind(&ForeignSessionHandler::HandleSetForeignSessionCollapsed,
                  base::Unretained(this)));
 }
 
-void ForeignSessionHandler::OnSyncConfigurationCompleted() {
+void ForeignSessionHandler::OnSyncConfigurationCompleted(
+    syncer::SyncService* sync) {
   HandleGetForeignSessions(nullptr);
 }
 
-void ForeignSessionHandler::OnForeignSessionUpdated() {
+void ForeignSessionHandler::OnForeignSessionUpdated(syncer::SyncService* sync) {
   HandleGetForeignSessions(nullptr);
 }
 
 base::string16 ForeignSessionHandler::FormatSessionTime(
     const base::Time& time) {
   // Return a time like "1 hour ago", "2 days ago", etc.
   base::Time now = base::Time::Now();
   // TimeFormat does not support negative TimeDelta values, so then we use 0.
   return ui::TimeFormat::Simple(
       ui::TimeFormat::FORMAT_ELAPSED, ui::TimeFormat::LENGTH_SHORT,
@@ skipping 179 matching lines @@
   // collapsed state persists.
   PrefService* prefs = Profile::FromWebUI(web_ui())->GetPrefs();
   DictionaryPrefUpdate update(prefs, prefs::kNtpCollapsedForeignSessions);
   if (is_collapsed)
     update.Get()->SetBoolean(session_tag, true);
   else
     update.Get()->Remove(session_tag, NULL);
 }
 
 }  // namespace browser_sync