[mus+ash] Removes WmWindow from window_positioning_utils

ash/wm/window_positioning_utils.h

 // Copyright 2016 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_POSITIONING_UTILS_H_
 #define ASH_WM_WINDOW_POSITIONING_UTILS_H_
 
 #include "ash/ash_export.h"
 
 namespace aura {
 class Window;
 }
 
 namespace display {
 class Display;
 }
 
 namespace gfx {
 class Rect;
 class Size;
 }
 
 namespace ash {
 
-class WmWindow;
-
 namespace wm {
 
 // We force at least this many DIPs for any window on the screen.
 const int kMinimumOnScreenArea = 25;
 
 // Adjusts |bounds| so that the size does not exceed |max_size|.
 ASH_EXPORT void AdjustBoundsSmallerThan(const gfx::Size& max_size,
                                         gfx::Rect* bounds);
 
 // Move the given bounds inside the given |visible_area| in parent coordinates,
@@ skipping 16 matching lines @@
 // coordinates.
 ASH_EXPORT gfx::Rect GetDefaultLeftSnappedWindowBoundsInParent(
     aura::Window* window);
 
 // Returns the bounds of a right snapped window with default width in parent
 // coordinates.
 ASH_EXPORT gfx::Rect GetDefaultRightSnappedWindowBoundsInParent(
     aura::Window* window);
 
 // Moves the window to the center of the display.
-ASH_EXPORT void CenterWindow(WmWindow* window);
+ASH_EXPORT void CenterWindow(aura::Window* window);
 
 // Sets the bounds of |window| to |bounds_in_screen|. This may move |window|
 // to |display| if necessary.
-ASH_EXPORT void SetBoundsInScreen(WmWindow* window,
+ASH_EXPORT void SetBoundsInScreen(aura::Window* window,
                                   const gfx::Rect& bounds_in_screen,
                                   const display::Display& display);
 
 }  // namespace wm
 }  // namespace ash
 
 #endif  // ASH_WM_WINDOW_POSITIONING_UTILS_H_