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

ash/wm/wm_window_animations.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_WM_WINDOW_ANIMATIONS_H_
-#define ASH_WM_WM_WINDOW_ANIMATIONS_H_
-
-#include "ash/ash_export.h"
-
-namespace ui {
-class Layer;
-}
-
-// This is only for animations specific to Ash. For window animations shared
-// with desktop Chrome, see ui/views/corewm/window_animations.h.
-namespace ash {
-
-// Direction for ash-specific window animations used in workspaces and
-// lock/unlock animations.
-enum LayerScaleAnimationDirection {
-  LAYER_SCALE_ANIMATION_ABOVE,
-  LAYER_SCALE_ANIMATION_BELOW,
-};
-
-// Applies scale related to the specified AshWindowScaleType.
-ASH_EXPORT void SetTransformForScaleAnimation(
-    ui::Layer* layer,
-    LayerScaleAnimationDirection type);
-
-}  // namespace ash
-
-#endif  // ASH_WM_WM_WINDOW_ANIMATIONS_H_