ui: Cleanup the usage of scoped_ptr throughout.

ui/message_center/message_center_tray.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/message_center_tray.h"
 
 #include "base/observer_list.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/models/simple_menu_model.h"
@@ skipping 180 matching lines @@
 
   message_center_visible_ = delegate_->ShowNotifierSettings();
   message_center_->SetVisibility(message_center::VISIBILITY_SETTINGS);
 
   NotifyMessageCenterTrayChanged();
 }
 
 scoped_ptr<ui::MenuModel> MessageCenterTray::CreateNotificationMenuModel(
     const NotifierId& notifier_id,
     const base::string16& display_source) {
-  return scoped_ptr<ui::MenuModel>(new NotificationMenuModel(
-      this, notifier_id, display_source));
+  return make_scoped_ptr(
+      new NotificationMenuModel(this, notifier_id, display_source));
 }
 
 void MessageCenterTray::OnNotificationAdded(
     const std::string& notification_id) {
   OnMessageCenterChanged();
 }
 
 void MessageCenterTray::OnNotificationRemoved(
     const std::string& notification_id,
     bool by_user) {
@@ skipping 42 matching lines @@
     ShowPopupBubble();
 
   NotifyMessageCenterTrayChanged();
 }
 
 void MessageCenterTray::NotifyMessageCenterTrayChanged() {
   delegate_->OnMessageCenterTrayChanged();
 }
 
 }  // namespace message_center