Remove parts of //cc we aren't using

cc/animation/scrollbar_animation_controller.h

-// Copyright 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 CC_ANIMATION_SCROLLBAR_ANIMATION_CONTROLLER_H_
-#define CC_ANIMATION_SCROLLBAR_ANIMATION_CONTROLLER_H_
-
-#include "base/cancelable_callback.h"
-#include "base/memory/weak_ptr.h"
-#include "base/time/time.h"
-#include "cc/base/cc_export.h"
-#include "cc/layers/layer_impl.h"
-#include "ui/gfx/geometry/vector2d_f.h"
-
-namespace cc {
-
-class ScrollbarAnimationController;
-
-class CC_EXPORT ScrollbarAnimationControllerClient {
- public:
-  virtual void StartAnimatingScrollbarAnimationController(
-      ScrollbarAnimationController* controller) = 0;
-  virtual void StopAnimatingScrollbarAnimationController(
-      ScrollbarAnimationController* controller) = 0;
-  virtual void PostDelayedScrollbarAnimationTask(const base::Closure& task,
-                                                 base::TimeDelta delay) = 0;
-  virtual void SetNeedsRedrawForScrollbarAnimation() = 0;
-
- protected:
-  virtual ~ScrollbarAnimationControllerClient() {}
-};
-
-// This abstract class represents the compositor-side analogy of
-// ScrollbarAnimator.  Individual platforms should subclass it to provide
-// specialized implementation.
-class CC_EXPORT ScrollbarAnimationController {
- public:
-  virtual ~ScrollbarAnimationController();
-
-  void Animate(base::TimeTicks now);
-
-  virtual void DidScrollBegin();
-  virtual void DidScrollUpdate(bool on_resize);
-  virtual void DidScrollEnd();
-  virtual void DidMouseMoveOffScrollbar() {}
-  virtual void DidMouseMoveNear(float distance) {}
-
- protected:
-  ScrollbarAnimationController(LayerImpl* scroll_layer,
-                               ScrollbarAnimationControllerClient* client,
-                               base::TimeDelta delay_before_starting,
-                               base::TimeDelta resize_delay_before_starting,
-                               base::TimeDelta duration);
-
-  virtual void RunAnimationFrame(float progress) = 0;
-
-  void StartAnimation();
-  void StopAnimation();
-
-  LayerImpl* scroll_layer_;
-  ScrollbarAnimationControllerClient* client_;
-
- private:
-  // Returns how far through the animation we are as a progress value from
-  // 0 to 1.
-  float AnimationProgressAtTime(base::TimeTicks now);
-
-  void PostDelayedAnimationTask(bool on_resize);
-
-  base::TimeTicks last_awaken_time_;
-  base::TimeDelta delay_before_starting_;
-  base::TimeDelta resize_delay_before_starting_;
-  base::TimeDelta duration_;
-
-  bool is_animating_;
-
-  bool currently_scrolling_;
-  bool scroll_gesture_has_scrolled_;
-  base::CancelableClosure delayed_scrollbar_fade_;
-
-  base::WeakPtrFactory<ScrollbarAnimationController> weak_factory_;
-};
-
-}  // namespace cc
-
-#endif  // CC_ANIMATION_SCROLLBAR_ANIMATION_CONTROLLER_H_