[Mac] Delete old balloon and Notification Center notification implementations.

chrome/browser/notifications/notification_ui_manager.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/notifications/notification_ui_manager.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/notifications/balloon_notification_ui_manager.h"
 #include "chrome/browser/notifications/message_center_notification_manager.h"
 #include "chrome/browser/notifications/message_center_settings_controller.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_info_cache.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "ui/message_center/message_center_util.h"
 
 // static
 bool NotificationUIManager::DelegatesToMessageCenter() {
   // In ChromeOS, it always uses MessageCenterNotificationManager. The flag of
   // --enable-rich-notifications switches the contents and behaviors inside of
   // the message center.
 #if defined(OS_CHROMEOS)
   return true;
 #endif
   return message_center::IsRichNotificationEnabled();
 }
 
-#if !defined(OS_MACOSX)
 // static
 NotificationUIManager* NotificationUIManager::Create(PrefService* local_state) {
   if (DelegatesToMessageCenter()) {
     ProfileInfoCache* profile_info_cache =
         &g_browser_process->profile_manager()->GetProfileInfoCache();
     scoped_ptr<message_center::NotifierSettingsProvider> settings_provider(
         new MessageCenterSettingsController(profile_info_cache));
     return new MessageCenterNotificationManager(
         g_browser_process->message_center(),
         local_state,
         settings_provider.Pass());
   }
 
+#if defined(OS_MACOSX)
+  NOTREACHED();
+  return NULL;
+#else
   BalloonNotificationUIManager* balloon_manager =
       new BalloonNotificationUIManager(local_state);
   balloon_manager->SetBalloonCollection(BalloonCollection::Create());
   return balloon_manager;
+#endif
 }
-#endif