[Oilpan] Migrate most classes under core/animations to Oilpan heap.

Source/core/animation/AnimationEffect.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 33 matching lines @@
 {
     if (fillMode != Timing::FillModeAuto)
         return fillMode;
     if (isAnimation)
         return Timing::FillModeNone;
     return Timing::FillModeBoth;
 }
 
 } // namespace
 
-AnimationEffect::AnimationEffect(const Timing& timing, PassOwnPtrWillBeRawPtr<EventDelegate> eventDelegate)
+AnimationEffect::AnimationEffect(const Timing& timing, EventDelegate* eventDelegate)
     : m_parent(nullptr)
     , m_startTime(0)
     , m_animation(nullptr)
     , m_timing(timing)
     , m_eventDelegate(eventDelegate)
     , m_calculated()
     , m_needsUpdate(true)
     , m_lastUpdateTime(nullValue())
 {
     m_timing.assertValid();
@@ skipping 149 matching lines @@
 const AnimationEffect::CalculatedTiming& AnimationEffect::ensureCalculated() const
 {
     if (!m_animation)
         return m_calculated;
     if (m_animation->outdated())
         m_animation->update(TimingUpdateOnDemand);
     ASSERT(!m_animation->outdated());
     return m_calculated;
 }
 
-PassRefPtrWillBeRawPtr<AnimationEffectTiming> AnimationEffect::timing()
+AnimationEffectTiming* AnimationEffect::timing()
 {
     return AnimationEffectTiming::create(this);
 }
 
 DEFINE_TRACE(AnimationEffect)
 {
     visitor->trace(m_parent);
     visitor->trace(m_animation);
     visitor->trace(m_eventDelegate);
 }
 
 } // namespace blink