chromeos: converts WindowResizer to aura::Window

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 "ui/wm/public/window_move_client.h"
 
+namespace aura {
+class Window;
+}
+
 namespace gfx {
 class Rect;
 }
 
 namespace ash {
 
-class WmWindow;
-
 // WindowResizer is used by ToplevelWindowEventFilter to handle dragging, moving
 // or resizing a window. All coordinates passed to this are in the parent
 // windows coordinates.
 class ASH_EXPORT WindowResizer {
  public:
   // Constants to identify the type of resize.
   static const int kBoundsChange_None;
   static const int kBoundsChange_Repositions;
   static const int kBoundsChange_Resizes;
 
@@ skipping 16 matching lines @@
   // flags from the event.
   virtual void Drag(const gfx::Point& location, int event_flags) = 0;
 
   // Invoked to complete the drag.
   virtual void CompleteDrag() = 0;
 
   // Reverts the drag.
   virtual void RevertDrag() = 0;
 
   // Returns the target window the resizer was created for.
-  WmWindow* GetTarget() const {
-    return window_state_ ? window_state_->window() : nullptr;
-  }
+  aura::Window* GetTarget() const;
+
   // See comment for |DragDetails::initial_location_in_parent|.
   const gfx::Point& GetInitialLocation() const {
     return window_state_->drag_details()->initial_location_in_parent;
   }
 
   // Drag parameters established when drag starts.
   const DragDetails& details() const { return *window_state_->drag_details(); }
 
  protected:
   gfx::Rect CalculateBoundsForDrag(const gfx::Point& location);
@@ skipping 20 matching lines @@
 
   // Returns the height of the drag.
   int GetHeightForDrag(int min_height, int* delta_y);
 
   DISALLOW_COPY_AND_ASSIGN(WindowResizer);
 };
 
 // Creates a WindowResizer for |window|. Returns a unique_ptr with null if
 // |window| should not be resized nor dragged.
 ASH_EXPORT std::unique_ptr<WindowResizer> CreateWindowResizer(
-    WmWindow* window,
+    aura::Window* window,
     const gfx::Point& point_in_parent,
     int window_component,
     aura::client::WindowMoveSource source);
 
 }  // namespace ash
 
 #endif  // ASH_WM_WINDOW_RESIZER_H_