Oilpan: Move AnimatableValue's hierarchy to oilpan's heap

Source/core/animation/AnimatableSVGLength.cpp

Index: Source/core/animation/AnimatableSVGLength.cpp
diff --git a/Source/core/animation/AnimatableSVGLength.cpp b/Source/core/animation/AnimatableSVGLength.cpp
index e370a62d6a172c62f2c9ca8b7f862607f4bb633d..c3b95811fbe4d48c6aa700652e91d08bcb352805 100644
--- a/Source/core/animation/AnimatableSVGLength.cpp
+++ b/Source/core/animation/AnimatableSVGLength.cpp
@@ -35,12 +35,12 @@
 
 namespace WebCore {
 
-PassRefPtr<AnimatableValue> AnimatableSVGLength::interpolateTo(const AnimatableValue* value, double fraction) const
+PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableSVGLength::interpolateTo(const AnimatableValue* value, double fraction) const
 {
     return create(toAnimatableSVGLength(value)->toSVGLength()->blend(m_length.get(), narrowPrecisionToFloat(fraction)));
 }
 
-PassRefPtr<AnimatableValue> AnimatableSVGLength::addWith(const AnimatableValue* value) const
+PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableSVGLength::addWith(const AnimatableValue* value) const
 {
     ASSERT_WITH_MESSAGE(false, "Web Animations not yet implemented: AnimatableSVGLength::addWith()");
     return defaultAddWith(this, value);
@@ -51,4 +51,9 @@ bool AnimatableSVGLength::equalTo(const AnimatableValue* value) const
     return *m_length == *toAnimatableSVGLength(value)->m_length;
 }
 
+void AnimatableSVGLength::trace(Visitor* visitor)
+{
+    AnimatableValue::trace(visitor);
+}
+
 } // namespace WebCore