Remove parts of //cc we aren't using

cc/animation/timing_function.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_TIMING_FUNCTION_H_
-#define CC_ANIMATION_TIMING_FUNCTION_H_
-
-#include "cc/base/cc_export.h"
-#include "ui/gfx/geometry/cubic_bezier.h"
-
-namespace cc {
-
-// See http://www.w3.org/TR/css3-transitions/.
-class CC_EXPORT TimingFunction {
- public:
-  virtual ~TimingFunction();
-
-  virtual float GetValue(double t) const = 0;
-  virtual float Velocity(double time) const = 0;
-  // The smallest and largest values returned by GetValue for inputs in [0, 1].
-  virtual void Range(float* min, float* max) const = 0;
-  virtual scoped_ptr<TimingFunction> Clone() const = 0;
-
- protected:
-  TimingFunction();
-
- private:
-  DISALLOW_ASSIGN(TimingFunction);
-};
-
-class CC_EXPORT CubicBezierTimingFunction : public TimingFunction {
- public:
-  static scoped_ptr<CubicBezierTimingFunction> Create(double x1, double y1,
-                                                      double x2, double y2);
-  ~CubicBezierTimingFunction() override;
-
-  // TimingFunction implementation.
-  float GetValue(double time) const override;
-  float Velocity(double time) const override;
-  void Range(float* min, float* max) const override;
-  scoped_ptr<TimingFunction> Clone() const override;
-
- protected:
-  CubicBezierTimingFunction(double x1, double y1, double x2, double y2);
-
-  gfx::CubicBezier bezier_;
-
- private:
-  DISALLOW_ASSIGN(CubicBezierTimingFunction);
-};
-
-class CC_EXPORT EaseTimingFunction {
- public:
-  static scoped_ptr<TimingFunction> Create();
-
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(EaseTimingFunction);
-};
-
-class CC_EXPORT EaseInTimingFunction {
- public:
-  static scoped_ptr<TimingFunction> Create();
-
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(EaseInTimingFunction);
-};
-
-class CC_EXPORT EaseOutTimingFunction {
- public:
-  static scoped_ptr<TimingFunction> Create();
-
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(EaseOutTimingFunction);
-};
-
-class CC_EXPORT EaseInOutTimingFunction {
- public:
-  static scoped_ptr<TimingFunction> Create();
-
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(EaseInOutTimingFunction);
-};
-
-class CC_EXPORT StepsTimingFunction : public TimingFunction {
- public:
-  static scoped_ptr<StepsTimingFunction> Create(int steps,
-                                                float steps_start_offset);
-  ~StepsTimingFunction() override;
-
-  float GetValue(double t) const override;
-  scoped_ptr<TimingFunction> Clone() const override;
-
-  void Range(float* min, float* max) const override;
-  float Velocity(double time) const override;
-
- protected:
-  StepsTimingFunction(int steps, float steps_start_offset);
-
- private:
-  int steps_;
-  float steps_start_offset_;
-
-  DISALLOW_ASSIGN(StepsTimingFunction);
-};
-
-}  // namespace cc
-
-#endif  // CC_ANIMATION_TIMING_FUNCTION_H_