chromeos: Move files in //ash/common to //ash, part 2

ash/wm/wm_snap_to_pixel_layout_manager.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_COMMON_WM_WM_SNAP_TO_PIXEL_LAYOUT_MANAGER_H_
-#define ASH_COMMON_WM_WM_SNAP_TO_PIXEL_LAYOUT_MANAGER_H_
+#ifndef ASH_WM_WM_SNAP_TO_PIXEL_LAYOUT_MANAGER_H_
+#define ASH_WM_WM_SNAP_TO_PIXEL_LAYOUT_MANAGER_H_
 
 #include "ash/ash_export.h"
 #include "ash/common/wm_layout_manager.h"
 #include "base/macros.h"
 
 namespace ash {
 namespace wm {
 
 // A layout manager that places children's layer at the physical pixel
 // boundaries.
@@ skipping 16 matching lines @@
   void SetChildBounds(WmWindow* child,
                       const gfx::Rect& requested_bounds) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WmSnapToPixelLayoutManager);
 };
 
 }  // namespace wm
 }  // namespace ash
 
-#endif  // ASH_COMMON_WM_WM_SNAP_TO_PIXEL_LAYOUT_MANAGER_H_
+#endif  // ASH_WM_WM_SNAP_TO_PIXEL_LAYOUT_MANAGER_H_