convert //mash to std::unique_ptr

mash/wm/frame/default_header_painter.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_DEFAULT_HEADER_PAINTER_H_
 #define MASH_WM_FRAME_DEFAULT_HEADER_PAINTER_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "mash/wm/frame/header_painter.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/animation/animation_delegate.h"
 
 namespace gfx {
 class ImageSkia;
 class Rect;
 class SlideAnimation;
 }
 namespace views {
@@ skipping 78 matching lines @@
 
   // The height of the header to paint.
   int painted_height_;
 
   // Whether the header should be painted as active.
   Mode mode_;
 
   // Whether the header is painted for the first time.
   bool initial_paint_;
 
-  scoped_ptr<gfx::SlideAnimation> activation_animation_;
+  std::unique_ptr<gfx::SlideAnimation> activation_animation_;
 
   DISALLOW_COPY_AND_ASSIGN(DefaultHeaderPainter);
 };
 
 }  // namespace wm
 }  // namespace mash
 
 #endif  // MASH_WM_FRAME_DEFAULT_HEADER_PAINTER_H_