Replace scoped_ptr with std::unique_ptr in //ui

ui/touch_selection/touch_handle_drawable_aura.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 UI_TOUCH_SELECTION_TOUCH_HANDLE_DRAWABLE_AURA_H_
 #define UI_TOUCH_SELECTION_TOUCH_HANDLE_DRAWABLE_AURA_H_
 
 #include "base/macros.h"
 #include "ui/touch_selection/touch_handle.h"
 #include "ui/touch_selection/touch_handle_orientation.h"
@@ skipping 24 matching lines @@
   void SetEnabled(bool enabled) override;
   void SetOrientation(TouchHandleOrientation orientation,
                       bool mirror_vertical,
                       bool mirror_horizontal) override;
   void SetOrigin(const gfx::PointF& position) override;
   void SetAlpha(float alpha) override;
   gfx::RectF GetVisibleBounds() const override;
   float GetDrawableHorizontalPaddingRatio() const override;
 
   aura_extra::ImageWindowDelegate* window_delegate_;
-  scoped_ptr<aura::Window> window_;
+  std::unique_ptr<aura::Window> window_;
   bool enabled_;
   float alpha_;
   ui::TouchHandleOrientation orientation_;
 
   // Origin position of the handle set via SetOrigin, in coordinate space of
   // selection controller client (i.e. handle's parent).
   gfx::PointF origin_position_;
 
   // Window bounds relative to the focal position.
   gfx::RectF relative_bounds_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchHandleDrawableAura);
 };
 
 }  // namespace ui
 
 #endif  // UI_TOUCH_SELECTION_TOUCH_HANDLE_DRAWABLE_AURA_H_