app: Remove animation header files.

app/animation_container.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.
-
-#ifndef APP_ANIMATION_CONTAINER_H_
-#define APP_ANIMATION_CONTAINER_H_
-#pragma once
-
-#include <set>
-
-#include "base/ref_counted.h"
-#include "base/time.h"
-#include "base/timer.h"
-
-class AnimationContainerElement;
-class AnimationContainerObserver;
-
-// AnimationContainer is used by Animation to manage the underlying timer.
-// Internally each Animation creates a single AnimationContainer. You can
-// group a set of Animations into the same AnimationContainer by way of
-// Animation::SetContainer. Grouping a set of Animations into the same
-// AnimationContainer ensures they all update and start at the same time.
-//
-// AnimationContainer is ref counted. Each Animation contained within the
-// AnimationContainer own it.
-class AnimationContainer : public base::RefCounted<AnimationContainer> {
- public:
-  AnimationContainer();
-
-  // Invoked by Animation when it needs to start. Starts the timer if necessary.
-  // NOTE: This is invoked by Animation for you, you shouldn't invoke this
-  // directly.
-  void Start(AnimationContainerElement* animation);
-
-  // Invoked by Animation when it needs to stop. If there are no more animations
-  // running the timer stops.
-  // NOTE: This is invoked by Animation for you, you shouldn't invoke this
-  // directly.
-  void Stop(AnimationContainerElement* animation);
-
-  void set_observer(AnimationContainerObserver* observer) {
-    observer_ = observer;
-  }
-
-  // The time the last animation ran at.
-  base::TimeTicks last_tick_time() const { return last_tick_time_; }
-
-  // Are there any timers running?
-  bool is_running() const { return !elements_.empty(); }
-
- private:
-  friend class base::RefCounted<AnimationContainer>;
-
-  typedef std::set<AnimationContainerElement*> Elements;
-
-  ~AnimationContainer();
-
-  // Timer callback method.
-  void Run();
-
-  // Sets min_timer_interval_ and restarts the timer.
-  void SetMinTimerInterval(base::TimeDelta delta);
-
-  // Returns the min timer interval of all the timers.
-  base::TimeDelta GetMinInterval();
-
-  // Represents one of two possible values:
-  // . If only a single animation has been started and the timer hasn't yet
-  //   fired this is the time the animation was added.
-  // . The time the last animation ran at (::Run was invoked).
-  base::TimeTicks last_tick_time_;
-
-  // Set of elements (animations) being managed.
-  Elements elements_;
-
-  // Minimum interval the timers run at.
-  base::TimeDelta min_timer_interval_;
-
-  base::RepeatingTimer<AnimationContainer> timer_;
-
-  AnimationContainerObserver* observer_;
-
-  DISALLOW_COPY_AND_ASSIGN(AnimationContainer);
-};
-
-#endif  // APP_ANIMATION_CONTAINER_H_