Replace scoped_ptr with std::unique_ptr in //ui

ui/message_center/fake_message_center.cc

Index: ui/message_center/fake_message_center.cc
diff --git a/ui/message_center/fake_message_center.cc b/ui/message_center/fake_message_center.cc
index f2db0dba356ee8b6ac5cf073351cdd3afd79980f..acfe78974c31a8cbdf212616bb7c3098a1c48336 100644
--- a/ui/message_center/fake_message_center.cc
+++ b/ui/message_center/fake_message_center.cc
@@ -61,12 +61,12 @@ NotificationList::PopupNotifications
   return NotificationList::PopupNotifications();
 }
 
-void FakeMessageCenter::AddNotification(scoped_ptr<Notification> notification) {
-}
+void FakeMessageCenter::AddNotification(
+    std::unique_ptr<Notification> notification) {}
 
 void FakeMessageCenter::UpdateNotification(
     const std::string& old_id,
-    scoped_ptr<Notification> new_notification) {}
+    std::unique_ptr<Notification> new_notification) {}
 
 void FakeMessageCenter::RemoveNotification(const std::string& id,
                                            bool by_user) {