Convert //ash from scoped_ptr to std::unique_ptr

ash/display/shared_display_edge_indicator.h

 // Copyright (c) 2012 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 ASH_DISPLAY_SHARED_DISPLAY_EDGE_INDICATOR_H_
 #define ASH_DISPLAY_SHARED_DISPLAY_EDGE_INDICATOR_H_
 
+#include <memory>
+
 #include "ash/ash_export.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/gfx/animation/animation_delegate.h"
 #include "ui/gfx/display.h"
 
 namespace gfx {
 class Rect;
 class ThrobAnimation;
 }
 
 namespace views {
 class View;
@@ skipping 19 matching lines @@
   void AnimationProgressed(const gfx::Animation* animation) override;
 
  private:
   // Used to show the displays' shared edge where a window can be moved across.
   // |src_widget_| is for the display where drag starts and |dst_widget_| is
   // for the other display.
   views::View* src_indicator_;
   views::View* dst_indicator_;
 
   // Used to transition the opacity.
-  scoped_ptr<gfx::ThrobAnimation> animation_;
+  std::unique_ptr<gfx::ThrobAnimation> animation_;
 
   DISALLOW_COPY_AND_ASSIGN(SharedDisplayEdgeIndicator);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_SHARED_DISPLAY_EDGE_INDICATOR_H_