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diff --git a/chromium/ash/wm/window_animations.h b/chromium/ash/wm/window_animations.h
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+++ b/chromium/ash/wm/window_animations.h
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+// 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_ANIMATIONS_H_
+#define ASH_WM_WINDOW_ANIMATIONS_H_
+
+#include "ash/ash_export.h"
+#include "ui/gfx/transform.h"
+#include "ui/views/corewm/window_animations.h"
+
+namespace aura {
+class Window;
+}
+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 {
+
+// An extension of the window animations provided by CoreWm. These should be
+// Ash-specific only.
+enum WindowVisibilityAnimationType {
+  // Window scale/rotates down to its launcher icon.
+  WINDOW_VISIBILITY_ANIMATION_TYPE_MINIMIZE =
+      views::corewm::WINDOW_VISIBILITY_ANIMATION_MAX,
+  // Fade in/out using brightness and grayscale web filters.
+  WINDOW_VISIBILITY_ANIMATION_TYPE_BRIGHTNESS_GRAYSCALE
+};
+
+// Direction for ash-specific window animations used in workspaces and
+// lock/unlock animations.
+enum LayerScaleAnimationDirection {
+  LAYER_SCALE_ANIMATION_ABOVE,
+  LAYER_SCALE_ANIMATION_BELOW,
+};
+
+// Amount of time for the cross fade animation.
+extern const int kCrossFadeDurationMS;
+
+// Animate a cross-fade of |window| from its current bounds to |new_bounds|.
+ASH_EXPORT void CrossFadeToBounds(aura::Window* window,
+                                  const gfx::Rect& new_bounds);
+
+// Returns the duration of the cross-fade animation based on the |old_bounds|
+// and |new_bounds| of the |window|.
+ASH_EXPORT base::TimeDelta GetCrossFadeDuration(aura::Window* window,
+                                                const gfx::Rect& old_bounds,
+                                                const gfx::Rect& new_bounds);
+
+ASH_EXPORT bool AnimateOnChildWindowVisibilityChanged(aura::Window* window,
+                                                      bool visible);
+
+// Creates vector of animation sequences that lasts for |duration| and changes
+// brightness and grayscale to |target_value|. Caller takes ownership of
+// returned LayerAnimationSequence objects.
+ASH_EXPORT std::vector<ui::LayerAnimationSequence*>
+CreateBrightnessGrayscaleAnimationSequence(float target_value,
+                                           base::TimeDelta duration);
+
+// Applies scale related to the specified AshWindowScaleType.
+ASH_EXPORT void SetTransformForScaleAnimation(
+    ui::Layer* layer,
+    LayerScaleAnimationDirection type);
+
+// Returns the approximate bounds to which |window| will be animated when it
+// is minimized. The bounds are approximate because the minimize animation
+// involves rotation.
+ASH_EXPORT gfx::Rect GetMinimizeAnimationTargetBoundsInScreen(
+    aura::Window* window);
+
+}  // namespace ash
+
+#endif  // ASH_WM_WINDOW_ANIMATIONS_H_