Add shutdown notification and service refs to SyncServiceObserver.

chrome/browser/ui/webui/sync_internals_message_handler.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/ui/webui/sync_internals_message_handler.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 156 matching lines @@
 }
 
 void SyncInternalsMessageHandler::OnReceivedAllNodes(
     int request_id,
     std::unique_ptr<base::ListValue> nodes) {
   base::FundamentalValue id(request_id);
   web_ui()->CallJavascriptFunctionUnsafe(
       syncer::sync_ui_util::kGetAllNodesCallback, id, *nodes);
 }
 
-void SyncInternalsMessageHandler::OnStateChanged() {
+void SyncInternalsMessageHandler::OnStateChanged(syncer::SyncService* sync) {
   SendAboutInfo();
 }
 
 void SyncInternalsMessageHandler::OnProtocolEvent(
     const syncer::ProtocolEvent& event) {
   std::unique_ptr<base::DictionaryValue> value(
       syncer::ProtocolEvent::ToValue(event));
   web_ui()->CallJavascriptFunctionUnsafe(
       syncer::sync_ui_util::kDispatchEvent,
       base::StringValue(syncer::sync_ui_util::kOnProtocolEvent), *value);
@@ skipping 51 matching lines @@
       base::StringValue(syncer::sync_ui_util::kOnAboutInfoUpdated), *value);
 }
 
 // Gets the ProfileSyncService of the underlying original profile.
 // May return NULL (e.g., if sync is disabled on the command line).
 ProfileSyncService* SyncInternalsMessageHandler::GetProfileSyncService() {
   Profile* profile = Profile::FromWebUI(web_ui());
   return ProfileSyncServiceFactory::GetForProfile(
       profile->GetOriginalProfile());
 }