Merge ChromeOS and SyncFS XMPP Notification into one class

chrome/browser/google_apis/drive_notification_manager_factory.cc

 // Copyright 2013 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/google_apis/drive_notification_manager_factory.h"
 
 #include "chrome/browser/google_apis/drive_notification_manager.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
+#include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/browser/sync/profile_sync_service_factory.h"
 
 namespace google_apis {
 
 // static
 DriveNotificationManager*
 DriveNotificationManagerFactory::GetForProfile(Profile* profile) {
+  if (!ProfileSyncService::IsSyncEnabled())
+    return NULL;
+
   return static_cast<DriveNotificationManager*>(
       GetInstance()->GetServiceForProfile(profile, true));
 }
 
 // static
 DriveNotificationManagerFactory*
 DriveNotificationManagerFactory::GetInstance() {
   return Singleton<DriveNotificationManagerFactory>::get();
 }
 
 DriveNotificationManagerFactory::DriveNotificationManagerFactory()
     : ProfileKeyedServiceFactory("DriveNotificationManager",
                                  ProfileDependencyManager::GetInstance()) {
   DependsOn(ProfileSyncServiceFactory::GetInstance());
 }
 
 DriveNotificationManagerFactory::~DriveNotificationManagerFactory() {}
 
 ProfileKeyedService* DriveNotificationManagerFactory::BuildServiceInstanceFor(
     Profile* profile) const {
   return new DriveNotificationManager(profile);
 }
 
 }  // namespace google_apis