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

Source/core/animation/animatable/AnimatableStrokeDasharrayList.h

 /*
  * 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 23 matching lines @@
 #include "core/CoreExport.h"
 #include "core/animation/animatable/AnimatableRepeatable.h"
 #include "core/style/SVGComputedStyleDefs.h"
 
 namespace blink {
 
 class CORE_EXPORT AnimatableStrokeDasharrayList final : public AnimatableRepeatable {
 public:
     ~AnimatableStrokeDasharrayList() override { }
 
-    static PassRefPtrWillBeRawPtr<AnimatableStrokeDasharrayList> create(PassRefPtr<SVGDashArray> lengths, float zoom)
+    static AnimatableStrokeDasharrayList* create(PassRefPtr<SVGDashArray> lengths, float zoom)
     {
-        return adoptRefWillBeNoop(new AnimatableStrokeDasharrayList(lengths, zoom));
+        return new AnimatableStrokeDasharrayList(lengths, zoom);
     }
 
     PassRefPtr<SVGDashArray> toSVGDashArray(float zoom) const;
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
-    PassRefPtrWillBeRawPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const override;
+    AnimatableValue* interpolateTo(const AnimatableValue*, double fraction) const override;
     bool usesDefaultInterpolationWith(const AnimatableValue*) const override;
 
 private:
     AnimatableStrokeDasharrayList(PassRefPtr<SVGDashArray>, float zoom);
     // This will consume the vector passed into it.
-    AnimatableStrokeDasharrayList(WillBeHeapVector<RefPtrWillBeMember<AnimatableValue>>& values)
+    AnimatableStrokeDasharrayList(HeapVector<Member<AnimatableValue>>& values)
         : AnimatableRepeatable(values)
     {
     }
 
     AnimatableType type() const override { return TypeStrokeDasharrayList; }
 };
 
 DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableStrokeDasharrayList, isStrokeDasharrayList());
 
 } // namespace blink
 
 #endif // AnimatableStrokeDasharrayList_h