Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGStringList.cpp

Index: Source/core/svg/SVGStringList.cpp
diff --git a/Source/core/svg/SVGStringList.cpp b/Source/core/svg/SVGStringList.cpp
index 5058925d574ab11896b94397ab2d62af5d402f35..daadd46f38b2ce333134094e09ebeccea80fa701 100644
--- a/Source/core/svg/SVGStringList.cpp
+++ b/Source/core/svg/SVGStringList.cpp
@@ -153,13 +153,13 @@ void SVGStringList::add(PassRefPtrWillBeRawPtr<SVGPropertyBase> other, SVGElemen
     ASSERT_NOT_REACHED();
 }
 
-void SVGStringList::calculateAnimatedValue(SVGAnimationElement*, float, unsigned, PassRefPtr<SVGPropertyBase>, PassRefPtr<SVGPropertyBase>, PassRefPtr<SVGPropertyBase>, SVGElement*)
+void SVGStringList::calculateAnimatedValue(SVGAnimationElement*, float, unsigned, PassRefPtrWillBeRawPtr<SVGPropertyBase>, PassRefPtrWillBeRawPtr<SVGPropertyBase>, PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*)
 {
     // SVGStringList is never animated.
     ASSERT_NOT_REACHED();
 }
 
-float SVGStringList::calculateDistance(PassRefPtr<SVGPropertyBase>, SVGElement*)
+float SVGStringList::calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*)
 {
     // SVGStringList is never animated.
     ASSERT_NOT_REACHED();