convert //mash to std::unique_ptr

mash/wm/frame/caption_buttons/frame_caption_button_container_view.h

 // Copyright 2015 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.
 
 #ifndef MASH_WM_FRAME_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_CONTAINER_VIEW_H_
 #define MASH_WM_FRAME_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_CONTAINER_VIEW_H_
 
 #include <map>
+#include <memory>
 
 #include "base/macros.h"
 #include "mash/wm/frame/caption_buttons/caption_button_types.h"
 #include "ui/gfx/animation/animation_delegate.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/view.h"
 
 namespace gfx {
 class SlideAnimation;
 }
@@ skipping 98 matching lines @@
   FrameCaptionButton* minimize_button_;
   FrameCaptionButton* size_button_;
   FrameCaptionButton* close_button_;
 
   // Mapping of the images needed to paint a button for each of the values of
   // CaptionButtonIcon.
   std::map<CaptionButtonIcon, ButtonIconIds> button_icon_id_map_;
 
   // Animation that affects the position of |minimize_button_| and the
   // visibility of |size_button_|.
-  scoped_ptr<gfx::SlideAnimation> maximize_mode_animation_;
+  std::unique_ptr<gfx::SlideAnimation> maximize_mode_animation_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameCaptionButtonContainerView);
 };
 
 }  // namespace wm
 }  // namespace mash
 
 #endif  // MASH_WM_FRAME_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_CONTAINER_VIEW_H_