Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGStaticStringList.cpp

Index: Source/core/svg/SVGStaticStringList.cpp
diff --git a/Source/core/svg/SVGStaticStringList.cpp b/Source/core/svg/SVGStaticStringList.cpp
index cf89dd0563a98965b3e023d6b4e3f874ff5a7847..4b49f83c5ddb1e9ca9d451199317799e170a540c 100644
--- a/Source/core/svg/SVGStaticStringList.cpp
+++ b/Source/core/svg/SVGStaticStringList.cpp
@@ -31,6 +31,8 @@
 #include "config.h"
 #include "core/svg/SVGStaticStringList.h"
 
+#include "core/svg/SVGElement.h"
+
 namespace blink {
 
 SVGStaticStringList::SVGStaticStringList(SVGElement* contextElement, const QualifiedName& attributeName)
@@ -44,6 +46,13 @@ SVGStaticStringList::~SVGStaticStringList()
 {
 }
 
+void SVGStaticStringList::trace(Visitor* visitor)
+{
+    visitor->trace(m_value);
+    visitor->trace(m_tearOff);
+    SVGAnimatedPropertyBase::trace(visitor);
+}
+
 SVGPropertyBase* SVGStaticStringList::currentValueBase()
 {
     return m_value.get();
@@ -54,13 +63,13 @@ bool SVGStaticStringList::isAnimating() const
     return false;
 }
 
-PassRefPtr<SVGPropertyBase> SVGStaticStringList::createAnimatedValue()
+PassRefPtrWillBeRawPtr<SVGPropertyBase> SVGStaticStringList::createAnimatedValue()
 {
     ASSERT_NOT_REACHED();
     return nullptr;
 }
 
-void SVGStaticStringList::setAnimatedValue(PassRefPtr<SVGPropertyBase>)
+void SVGStaticStringList::setAnimatedValue(PassRefPtrWillBeRawPtr<SVGPropertyBase>)
 {
     ASSERT_NOT_REACHED();
 }