[Sync] Trigger refresh for synced notifications on context change

chrome/browser/notifications/sync_notifier/chrome_notifier_service.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.
 
 // The ChromeNotifierService works together with sync to maintain the state of
 // user notifications, which can then be presented in the notification center,
 // via the Notification UI Manager.
 
 #include "chrome/browser/notifications/sync_notifier/chrome_notifier_service.h"
 
+#include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/api/synced_notifications_private/synced_notifications_shim.h"
 #include "chrome/browser/profiles/profile.h"
+#include "content/public/browser/notification_service.h"
 #include "extensions/browser/event_router.h"
 
 namespace notifier {
 
 ChromeNotifierService::ChromeNotifierService(Profile* profile)
     : profile_(profile),
       weak_ptr_factory_(this) {
   synced_notifications_shim_.reset(new SyncedNotificationsShim(
       base::Bind(&ChromeNotifierService::FireSyncJSEvent,
+                 weak_ptr_factory_.GetWeakPtr()),
+      base::Bind(&ChromeNotifierService::NotifyRefreshNeeded,
                  weak_ptr_factory_.GetWeakPtr())));
 }
 
 ChromeNotifierService::~ChromeNotifierService() {
 }
 
 // Methods from KeyedService.
 void ChromeNotifierService::Shutdown() {}
 
 SyncedNotificationsShim* ChromeNotifierService::GetSyncedNotificationsShim() {
   return synced_notifications_shim_.get();
 }
 
 void ChromeNotifierService::FireSyncJSEvent(
     scoped_ptr<extensions::Event> event) {
   event->restrict_to_browser_context = profile_;
   // TODO(synced notifications): consider broadcasting to a specific extension
   // id.
   extensions::EventRouter::Get(profile_)->BroadcastEvent(event.Pass());
 }
 
+void ChromeNotifierService::NotifyRefreshNeeded() {
+  const syncer::ModelTypeSet types(syncer::SYNCED_NOTIFICATIONS);
+  content::NotificationService::current()->Notify(
+      chrome::NOTIFICATION_SYNC_REFRESH_LOCAL,
+      content::Source<Profile>(profile_),
+      content::Details<const syncer::ModelTypeSet>(&types));
+}
+
 }  // namespace notifier