Hide the process of instantiating NotificationServiceImpl from embedders.

chrome/browser/sync/profile_sync_test_util.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/sync/profile_sync_test_util.h"
 
 #include "base/bind.h"
 #include "base/task.h"
 #include "base/threading/thread.h"
 
@@ skipping 20 matching lines @@
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   notification_thread_->message_loop()->PostTask(
       FROM_HERE,
       base::Bind(&ThreadNotificationService::TearDownTask, this));
   done_event_.Wait();
 }
 
 ThreadNotificationService::~ThreadNotificationService() {}
 
 void ThreadNotificationService::InitTask() {
-  service_.reset(new NotificationServiceImpl());
+  service_.reset(content::NotificationService::Create());
   done_event_.Signal();
 }
 
 void ThreadNotificationService::TearDownTask() {
   service_.reset(NULL);
   done_event_.Signal();
 }
 
 ThreadNotifier::ThreadNotifier(base::Thread* notify_thread)
     : done_event_(false, false),
@@ skipping 15 matching lines @@
 }
 
 ThreadNotifier::~ThreadNotifier() {}
 
 void ThreadNotifier::NotifyTask(int type,
                                 const content::NotificationSource& source,
                                 const content::NotificationDetails& details) {
   content::NotificationService::current()->Notify(type, source, details);
   done_event_.Signal();
 }