Add a Create method to DesktopNotificationHandler and stubs for the notification objects.

chrome/browser/printing/cloud_print/cloud_print_proxy_service.cc

 // Copyright (c) 2011 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/utf_string_conversions.h"
@@ skipping 93 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.
   GURL icon_url;
 
   string16 title = UTF8ToUTF16(kCloudPrintProductName);
   string16 message =
       l10n_util::GetStringUTF16(IDS_CLOUD_PRINT_TOKEN_EXPIRED_MESSAGE);
-  string16 content_url = DesktopNotificationService::CreateDataUrl(
-      icon_url, title, message, WebKit::WebTextDirectionDefault);
-  token_expired_delegate_ = new TokenExpiredNotificationDelegate(this);
-  Notification notification(GURL(), GURL(content_url), string16(), string16(),
-                            token_expired_delegate_.get());
-  g_browser_process->notification_ui_manager()->Add(notification, profile_);
+  DesktopNotificationService::ShowBalloon(
+      GURL(), icon_url, title, message, token_expired_delegate_.get(),
+      profile_);
   // Keep the browser alive while we are showing the notification.
   BrowserList::StartKeepAlive();
   return true;
 }
 
 void CloudPrintProxyService::OnTokenExpiredNotificationError() {
   TokenExpiredNotificationDone(false);
 }
 
 void CloudPrintProxyService::OnTokenExpiredNotificationClosed(bool by_user) {
@@ skipping 71 matching lines @@
     const cloud_print::CloudPrintProxyInfo& proxy_info) {
   profile_->GetPrefs()->SetString(
       prefs::kCloudPrintEmail,
       proxy_info.enabled ? proxy_info.email : std::string());
 }
 
 bool CloudPrintProxyService::InvokeServiceTask(Task* task) {
   ServiceProcessControl::GetInstance()->Launch(task, NULL);
   return true;
 }