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

Source/core/animation/AnimationTimeline.h

Index: Source/core/animation/AnimationTimeline.h
diff --git a/Source/core/animation/AnimationTimeline.h b/Source/core/animation/AnimationTimeline.h
index 5e24cd2530a266e05944084241f51e71fd389e0c..189ad2cf38941de36858d12c9555c8f9eeb377ee 100644
--- a/Source/core/animation/AnimationTimeline.h
+++ b/Source/core/animation/AnimationTimeline.h
@@ -49,10 +49,10 @@ class Document;
 class AnimationEffect;
 
 // AnimationTimeline is constructed and owned by Document, and tied to its lifecycle.
-class CORE_EXPORT AnimationTimeline : public RefCountedWillBeGarbageCollectedFinalized<AnimationTimeline>, public ScriptWrappable {
+class CORE_EXPORT AnimationTimeline : public GarbageCollectedFinalized<AnimationTimeline>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    class PlatformTiming : public NoBaseWillBeGarbageCollectedFinalized<PlatformTiming> {
+    class PlatformTiming : public GarbageCollectedFinalized<PlatformTiming> {
 
     public:
         // Calls AnimationTimeline's wake() method after duration seconds.
@@ -63,7 +63,7 @@ public:
         DEFINE_INLINE_VIRTUAL_TRACE() { }
     };
 
-    static PassRefPtrWillBeRawPtr<AnimationTimeline> create(Document*, PassOwnPtrWillBeRawPtr<PlatformTiming> = nullptr);
+    static AnimationTimeline* create(Document*, PlatformTiming* = nullptr);
     ~AnimationTimeline();
 
     void serviceAnimations(TimingUpdateReason);
@@ -107,10 +107,12 @@ public:
 #endif
     void wake();
 
+    PlatformTiming* timing() { return m_timing.get(); }
+
     DECLARE_TRACE();
 
 protected:
-    AnimationTimeline(Document*, PassOwnPtrWillBeRawPtr<PlatformTiming>);
+    AnimationTimeline(Document*, PlatformTiming*);
 
 private:
     RawPtrWillBeMember<Document> m_document;
@@ -126,7 +128,7 @@ private:
     friend class SMILTimeContainer;
     static const double s_minimumDelay;
 
-    OwnPtrWillBeMember<PlatformTiming> m_timing;
+    Member<PlatformTiming> m_timing;
     double m_lastCurrentTimeInternal;
 
     OwnPtr<WebCompositorAnimationTimeline> m_compositorTimeline;
@@ -149,7 +151,7 @@ private:
         DECLARE_VIRTUAL_TRACE();
 
     private:
-        RawPtrWillBeMember<AnimationTimeline> m_timeline;
+        Member<AnimationTimeline> m_timeline;
         Timer<AnimationTimelineTiming> m_timer;
     };