Fix Ash notification updates

chrome/browser/ui/views/ash/balloon_view_ash.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/views/ash/balloon_view_ash.h"
 
 #include "ash/shell.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/web_notification/web_notification_tray.h"
 #include "base/logging.h"
@@ skipping 75 matching lines @@
       balloon_(NULL) {
 }
 
 BalloonViewAsh::~BalloonViewAsh() {
 }
 
 // BalloonView interface.
 void BalloonViewAsh::Show(Balloon* balloon) {
   balloon_ = balloon;
   const Notification& notification = balloon_->notification();
+  current_notification_id_ = notification.notification_id();
   std::string extension_id = GetExtensionId(balloon);
-  GetWebNotificationTray()->AddNotification(notification.notification_id(),
+  GetWebNotificationTray()->AddNotification(current_notification_id_,
                                             notification.title(),
                                             notification.body(),
                                             notification.display_source(),
                                             extension_id);
   FetchIcon(notification);
 }
 
 void BalloonViewAsh::Update() {
   const Notification& notification = balloon_->notification();
-  GetWebNotificationTray()->UpdateNotification(notification.notification_id(),
+  std::string new_notification_id = notification.notification_id();
+  GetWebNotificationTray()->UpdateNotification(current_notification_id_,
+                                               new_notification_id,
                                                notification.title(),
                                                notification.body());
+  current_notification_id_ = new_notification_id;
   FetchIcon(notification);
 }
 
 void BalloonViewAsh::RepositionToBalloon() {
 }
 
 void BalloonViewAsh::Close(bool by_user) {
   Notification notification(balloon_->notification());  // Copy notification
   collection_->OnBalloonClosed(balloon_);  // Deletes balloon.
   notification.Close(by_user);
@@ skipping 37 matching lines @@
   ExtensionService* extension_service =
       balloon_->profile()->GetExtensionService();
   const GURL& origin = balloon_->notification().origin_url();
   const extensions::Extension* extension =
       extension_service->extensions()->GetExtensionOrAppByURL(
           ExtensionURLInfo(origin));
   if (extension)
     return extension->id();
   return std::string();
 }