Replace scoped_ptr with std::unique_ptr in //ui

ui/message_center/views/message_popup_collection.cc

 // Copyright (c) 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 "ui/message_center/views/message_popup_collection.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/i18n/rtl.h"
@@ skipping 86 matching lines @@
     // Don't remove the notification only when it's not pinned.
     if (!notification->pinned())
       message_center_->RemoveNotification(notification_id, by_user);
     else
       message_center_->MarkSinglePopupAsShown(notification_id, true /* read */);
 
     break;
   }
 }
 
-scoped_ptr<ui::MenuModel> MessagePopupCollection::CreateMenuModel(
+std::unique_ptr<ui::MenuModel> MessagePopupCollection::CreateMenuModel(
     const NotifierId& notifier_id,
     const base::string16& display_source) {
   return tray_->CreateNotificationMenuModel(notifier_id, display_source);
 }
 
 bool MessagePopupCollection::HasClickedListener(
     const std::string& notification_id) {
   return message_center_->HasClickedListener(notification_id);
 }
 
@@ skipping 420 matching lines @@
       views::Widget* widget = (*iter)->GetWidget();
       if (widget)
         return widget->GetWindowBoundsInScreen();
       break;
     }
   }
   return gfx::Rect();
 }
 
 }  // namespace message_center