ui: Move compositor/ directory out of gfx/, up to ui/.

ui/gfx/compositor/scoped_layer_animation_settings.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 UI_GFX_COMPOSITOR_SCOPED_LAYER_ANIMATION_SETTINGS_H_
-#define UI_GFX_COMPOSITOR_SCOPED_LAYER_ANIMATION_SETTINGS_H_
-#pragma once
-
-#include <set>
-
-#include "base/time.h"
-
-#include "ui/base/animation/tween.h"
-#include "ui/gfx/compositor/compositor_export.h"
-#include "ui/gfx/compositor/layer_animator.h"
-
-namespace ui {
-
-class ImplicitAnimationObserver;
-class LayerAnimationObserver;
-
-// Scoped settings allow you to temporarily change the animator's settings and
-// these changes are reverted when the object is destroyed. NOTE: when the
-// settings object is created, it applies the default transition duration
-// (200ms).
-class COMPOSITOR_EXPORT ScopedLayerAnimationSettings {
- public:
-  explicit ScopedLayerAnimationSettings(LayerAnimator* animator);
-  virtual ~ScopedLayerAnimationSettings();
-
-  void AddObserver(ImplicitAnimationObserver* observer);
-
-  void SetTransitionDuration(base::TimeDelta duration);
-  base::TimeDelta GetTransitionDuration() const;
-
-  void SetTweenType(Tween::Type tween_type);
-  Tween::Type GetTweenType() const;
-
-  void SetPreemptionStrategy(LayerAnimator::PreemptionStrategy strategy);
-  LayerAnimator::PreemptionStrategy GetPreemptionStrategy() const;
-
- private:
-  LayerAnimator* animator_;
-  base::TimeDelta old_transition_duration_;
-  Tween::Type old_tween_type_;
-  LayerAnimator::PreemptionStrategy old_preemption_strategy_;
-  std::set<ImplicitAnimationObserver*> observers_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScopedLayerAnimationSettings);
-};
-
-}  // namespace ui
-
-#endif  // UI_GFX_COMPOSITOR_SCOPED_LAYER_ANIMATION_SETTINGS_H_