Convert //ash from scoped_ptr to std::unique_ptr

ash/system/locale/locale_notification_controller.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 "ash/system/locale/locale_notification_controller.h"
 
 #include <utility>
 
 #include "ash/shell.h"
 #include "ash/system/system_notifier.h"
@@ skipping 83 matching lines @@
   base::string16 to = l10n_util::GetDisplayNameForLocale(
       to_locale, cur_locale, true);
 
   message_center::RichNotificationData optional;
   optional.buttons.push_back(message_center::ButtonInfo(
       l10n_util::GetStringFUTF16(
           IDS_ASH_STATUS_TRAY_LOCALE_REVERT_MESSAGE, from)));
   optional.never_timeout = true;
 
   ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
-  scoped_ptr<Notification> notification(new Notification(
+  std::unique_ptr<Notification> notification(new Notification(
       message_center::NOTIFICATION_TYPE_SIMPLE, kLocaleChangeNotificationId,
       base::string16() /* title */,
       l10n_util::GetStringFUTF16(IDS_ASH_STATUS_TRAY_LOCALE_CHANGE_MESSAGE,
                                  from, to),
       bundle.GetImageNamed(IDR_AURA_UBER_TRAY_LOCALE),
       base::string16() /* display_source */, GURL(),
       message_center::NotifierId(message_center::NotifierId::SYSTEM_COMPONENT,
                                  system_notifier::kNotifierLocale),
       optional, new LocaleNotificationDelegate(delegate)));
   message_center::MessageCenter::Get()->AddNotification(
       std::move(notification));
 }
 
 }  // namespace ash