app: Remove animation header files.

app/linear_animation.h

-// Copyright (c) 2010 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.
-// Inspired by NSAnimation
-
-#ifndef APP_LINEAR_ANIMATION_H_
-#define APP_LINEAR_ANIMATION_H_
-#pragma once
-
-#include "app/animation.h"
-#include "base/time.h"
-
-class AnimationDelegate;
-
-// Linear time bounded animation. As the animation progresses AnimateToState is
-// invoked.
-class LinearAnimation : public Animation {
- public:
-  // Initializes everything except the duration.
-  //
-  // Caller must make sure to call SetDuration() if they use this
-  // constructor; it is preferable to use the full one, but sometimes
-  // duration can change between calls to Start() and we need to
-  // expose this interface.
-  LinearAnimation(int frame_rate, AnimationDelegate* delegate);
-
-  // Initializes all fields.
-  LinearAnimation(int duration, int frame_rate, AnimationDelegate* delegate);
-
-  // Gets the value for the current state, according to the animation curve in
-  // use. This class provides only for a linear relationship, however subclasses
-  // can override this to provide others.
-  virtual double GetCurrentValue() const;
-
-  // Skip to the end of the current animation.
-  void End();
-
-  // Changes the length of the animation. This resets the current
-  // state of the animation to the beginning.
-  void SetDuration(int duration);
-
- protected:
-  // Called when the animation progresses. Subclasses override this to
-  // efficiently update their state.
-  virtual void AnimateToState(double state) = 0;
-
-  // Invoked by the AnimationContainer when the animation is running to advance
-  // the animation. Use |time_now| rather than Time::Now to avoid multiple
-  // animations running at the same time diverging.
-  virtual void Step(base::TimeTicks time_now);
-
-  // Overriden to advance to the end (if End was invoked).
-  virtual void AnimationStopped();
-
-  // Overriden to return true if state is not 1.
-  virtual bool ShouldSendCanceledFromStop();
-
- private:
-  base::TimeDelta duration_;
-
-  // Current state, on a scale from 0.0 to 1.0.
-  double state_;
-
-  // If true, we're in end. This is used to determine if the animation should
-  // be advanced to the end from AnimationStopped.
-  bool in_end_;
-
-  DISALLOW_COPY_AND_ASSIGN(LinearAnimation);
-};
-
-#endif  // APP_LINEAR_ANIMATION_H_