Correctly remove file browser notifications from Ash notification tray.

chrome/browser/printing/cloud_print/cloud_print_proxy_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.
 
 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
 
 #include <stack>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 126 matching lines @@
   // If we already have a pending notification, don't show another one.
   if (token_expired_delegate_.get())
     return false;
 
   // TODO(sanjeevr): Get icon for this notification. crbug.com/132848.
   string16 title = l10n_util::GetStringUTF16(IDS_GOOGLE_CLOUD_PRINT);
   string16 message =
       l10n_util::GetStringFUTF16(IDS_CLOUD_PRINT_TOKEN_EXPIRED_MESSAGE, title);
   token_expired_delegate_ = new TokenExpiredNotificationDelegate(this);
   DesktopNotificationService::AddNotification(
-      GURL(), title, message, GURL(),
+      GURL(), title, message, GURL(), string16(),
       token_expired_delegate_.get(), profile_);
   // Keep the browser alive while we are showing the notification.
   browser::StartKeepAlive();
   return true;
 }
 
 void CloudPrintProxyService::OnTokenExpiredNotificationError() {
   TokenExpiredNotificationDone(false);
 }
 
@@ skipping 107 matching lines @@
 }
 
 bool CloudPrintProxyService::InvokeServiceTask(const base::Closure& task) {
   GetServiceProcessControl()->Launch(task, base::Closure());
   return true;
 }
 
 ServiceProcessControl* CloudPrintProxyService::GetServiceProcessControl() {
   return ServiceProcessControl::GetInstance();
 }