Remove parts of //cc we aren't using

cc/animation/scroll_offset_animation_curve.h

-// Copyright 2013 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_SCROLL_OFFSET_ANIMATION_CURVE_H_
-#define CC_ANIMATION_SCROLL_OFFSET_ANIMATION_CURVE_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "base/time/time.h"
-#include "cc/animation/animation_curve.h"
-#include "cc/base/cc_export.h"
-#include "ui/gfx/geometry/scroll_offset.h"
-
-namespace cc {
-
-class TimingFunction;
-
-class CC_EXPORT ScrollOffsetAnimationCurve : public AnimationCurve {
- public:
-  static scoped_ptr<ScrollOffsetAnimationCurve> Create(
-      const gfx::ScrollOffset& target_value,
-      scoped_ptr<TimingFunction> timing_function);
-
-  ~ScrollOffsetAnimationCurve() override;
-
-  void SetInitialValue(const gfx::ScrollOffset& initial_value);
-  gfx::ScrollOffset GetValue(base::TimeDelta t) const;
-  gfx::ScrollOffset target_value() const { return target_value_; }
-  void UpdateTarget(double t, const gfx::ScrollOffset& new_target);
-
-  // AnimationCurve implementation
-  base::TimeDelta Duration() const override;
-  CurveType Type() const override;
-  scoped_ptr<AnimationCurve> Clone() const override;
-
- private:
-  ScrollOffsetAnimationCurve(const gfx::ScrollOffset& target_value,
-                             scoped_ptr <TimingFunction> timing_function);
-
-  gfx::ScrollOffset initial_value_;
-  gfx::ScrollOffset target_value_;
-  base::TimeDelta total_animation_duration_;
-
-  // Time from animation start to most recent UpdateTarget.
-  base::TimeDelta last_retarget_;
-
-  scoped_ptr<TimingFunction> timing_function_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScrollOffsetAnimationCurve);
-};
-
-}  // namespace cc
-
-#endif  // CC_ANIMATION_SCROLL_OFFSET_ANIMATION_CURVE_H_