Convert //ash from scoped_ptr to std::unique_ptr

ash/wm/window_resizer.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_WM_WINDOW_RESIZER_H_
 #define ASH_WM_WINDOW_RESIZER_H_
 
+#include <memory>
+
 #include "ash/ash_export.h"
 #include "ash/wm/drag_details.h"
 #include "ash/wm/window_state.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/wm/public/window_move_client.h"
 
 namespace aura {
 class Window;
 }
 
 namespace ash {
 
 // WindowResizer is used by ToplevelWindowEventFilter to handle dragging, moving
@@ skipping 68 matching lines @@
   int GetWidthForDrag(int min_width, int* delta_x);
 
   // Returns the height of the drag.
   int GetHeightForDrag(int min_height, int* delta_y);
 
   DISALLOW_COPY_AND_ASSIGN(WindowResizer);
 };
 
 // Creates a WindowResizer for |window|. This can return a scoped_ptr
 // initialized with NULL if |window| should not be resized nor dragged.
-ASH_EXPORT scoped_ptr<WindowResizer> CreateWindowResizer(
+ASH_EXPORT std::unique_ptr<WindowResizer> CreateWindowResizer(
     aura::Window* window,
     const gfx::Point& point_in_parent,
     int window_component,
     aura::client::WindowMoveSource source);
 
 }  // namespace ash
 
 #endif  // ASH_WM_WINDOW_RESIZER_H_