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

Source/core/animation/SVGStrokeDasharrayStyleInterpolation.h

Index: Source/core/animation/SVGStrokeDasharrayStyleInterpolation.h
diff --git a/Source/core/animation/SVGStrokeDasharrayStyleInterpolation.h b/Source/core/animation/SVGStrokeDasharrayStyleInterpolation.h
index f849598a42e92bce923e21ecb63f810fccac780b..41efa7805c9bc5b56c38d60be800899b41d37bb0 100644
--- a/Source/core/animation/SVGStrokeDasharrayStyleInterpolation.h
+++ b/Source/core/animation/SVGStrokeDasharrayStyleInterpolation.h
@@ -15,7 +15,7 @@ class CSSValueList;
 
 class CORE_EXPORT SVGStrokeDasharrayStyleInterpolation : public StyleInterpolation {
 public:
-    static PassRefPtrWillBeRawPtr<SVGStrokeDasharrayStyleInterpolation> maybeCreate(const CSSValue& start, const CSSValue& end, CSSPropertyID);
+    static SVGStrokeDasharrayStyleInterpolation* maybeCreate(const CSSValue& start, const CSSValue& end, CSSPropertyID);
 
     void apply(StyleResolverState&) const override;
 
@@ -25,7 +25,7 @@ public:
     }
 
 private:
-    SVGStrokeDasharrayStyleInterpolation(PassOwnPtrWillBeRawPtr<InterpolableValue> start, PassOwnPtrWillBeRawPtr<InterpolableValue> end, CSSPropertyID id)
+    SVGStrokeDasharrayStyleInterpolation(InterpolableValue* start, InterpolableValue* end, CSSPropertyID id)
         : StyleInterpolation(start, end, id)
     { }