Makes WorkspaceWindowResizer use ash/wm/common types

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"
@@ skipping 90 matching lines @@
 
   // Returns the width of the window.
   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

[James Cook, 2016/04/22 20:06:13]

nit while you're here: scoped_ptr -> unique_ptr

[sky, 2016/04/22 20:13:20]

Done.

 // initialized with NULL if |window| should not be resized nor dragged.
-// TODO(sky): move this to its own file. This is aura specific.
 ASH_EXPORT std::unique_ptr<WindowResizer> CreateWindowResizer(
-    aura::Window* window,
+    wm::WmWindow* window,
     const gfx::Point& point_in_parent,
     int window_component,
     aura::client::WindowMoveSource source);
 
 }  // namespace ash
 
 #endif  // ASH_WM_WINDOW_RESIZER_H_