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

Source/core/animation/Animation.h

Index: Source/core/animation/Animation.h
diff --git a/Source/core/animation/Animation.h b/Source/core/animation/Animation.h
index 3f8937196673096f8227cd98ddb856eafc8197c5..c05bb19b156b7356887e3f08d6119a57c67b7476 100644
--- a/Source/core/animation/Animation.h
+++ b/Source/core/animation/Animation.h
@@ -53,11 +53,11 @@ class CORE_EXPORT Animation final : public AnimationNode {
 public:
     enum Priority { DefaultPriority, TransitionPriority };
 
-    static PassRefPtrWillBeRawPtr<Animation> create(Element*, PassRefPtrWillBeRawPtr<AnimationEffect>, const Timing&, Priority = DefaultPriority, PassOwnPtrWillBeRawPtr<EventDelegate> = nullptr);
+    static Animation* create(Element*, AnimationEffect*, const Timing&, Priority = DefaultPriority, EventDelegate* = nullptr);
     // Web Animations API Bindings constructors.
-    static PassRefPtrWillBeRawPtr<Animation> create(Element*, const Vector<Dictionary>& keyframeDictionaryVector, double duration, ExceptionState&);
-    static PassRefPtrWillBeRawPtr<Animation> create(Element*, const Vector<Dictionary>& keyframeDictionaryVector, const AnimationTimingProperties& timingInput, ExceptionState&);
-    static PassRefPtrWillBeRawPtr<Animation> create(Element*, const Vector<Dictionary>& keyframeDictionaryVector, ExceptionState&);
+    static Animation* create(Element*, const Vector<Dictionary>& keyframeDictionaryVector, double duration, ExceptionState&);
+    static Animation* create(Element*, const Vector<Dictionary>& keyframeDictionaryVector, const AnimationTimingProperties& timingInput, ExceptionState&);
+    static Animation* create(Element*, const Vector<Dictionary>& keyframeDictionaryVector, ExceptionState&);
 
     virtual ~Animation();
 
@@ -66,14 +66,10 @@ public:
     bool affects(PropertyHandle) const;
     const AnimationEffect* effect() const { return m_effect.get(); }
     AnimationEffect* effect() { return m_effect.get(); }
-    void setEffect(PassRefPtrWillBeRawPtr<AnimationEffect> effect) { m_effect = effect; }
+    void setEffect(AnimationEffect* effect) { m_effect = effect; }
     Priority priority() const { return m_priority; }
     Element* target() const { return m_target; }
 
-#if !ENABLE(OILPAN)
-    void notifyElementDestroyed();
-#endif
-
     bool isCandidateForAnimationOnCompositor(double playerPlaybackRate) const;
     // Must only be called once.
     bool maybeStartAnimationOnCompositor(int group, double startTime, double timeOffset, double playerPlaybackRate);
@@ -103,11 +99,11 @@ protected:
     virtual double calculateTimeToEffectChange(bool forwards, double inheritedTime, double timeToNextIteration) const override;
 
 private:
-    Animation(Element*, PassRefPtrWillBeRawPtr<AnimationEffect>, const Timing&, Priority, PassOwnPtrWillBeRawPtr<EventDelegate>);
+    Animation(Element*, AnimationEffect*, const Timing&, Priority, EventDelegate*);
 
     RawPtrWillBeMember<Element> m_target;
-    RefPtrWillBeMember<AnimationEffect> m_effect;
-    RawPtrWillBeMember<SampledEffect> m_sampledEffect;
+    Member<AnimationEffect> m_effect;
+    Member<SampledEffect> m_sampledEffect;
 
     Priority m_priority;