Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGComponentTransferFunctionElement.h

Index: Source/core/svg/SVGComponentTransferFunctionElement.h
diff --git a/Source/core/svg/SVGComponentTransferFunctionElement.h b/Source/core/svg/SVGComponentTransferFunctionElement.h
index d4c4887b456020e2194360fb89016dac41b857a9..fdb6c0b16ebbfd033fcec4e753c4cc249e005dc1 100644
--- a/Source/core/svg/SVGComponentTransferFunctionElement.h
+++ b/Source/core/svg/SVGComponentTransferFunctionElement.h
@@ -26,6 +26,7 @@
 #include "core/svg/SVGAnimatedNumberList.h"
 #include "core/svg/SVGElement.h"
 #include "platform/graphics/filters/FEComponentTransfer.h"
+#include "platform/heap/Handle.h"
 
 namespace blink {
 
@@ -44,6 +45,8 @@ public:
     SVGAnimatedNumber* offset() { return m_offset.get(); }
     SVGAnimatedEnumeration<ComponentTransferType>* type() { return m_type.get(); }
 
+    virtual void trace(Visitor*) override;
+
 protected:
     SVGComponentTransferFunctionElement(const QualifiedName&, Document&);
 
@@ -54,13 +57,13 @@ protected:
     virtual bool rendererIsNeeded(const RenderStyle&) override final { return false; }
 
 private:
-    RefPtr<SVGAnimatedNumberList> m_tableValues;
-    RefPtr<SVGAnimatedNumber> m_slope;
-    RefPtr<SVGAnimatedNumber> m_intercept;
-    RefPtr<SVGAnimatedNumber> m_amplitude;
-    RefPtr<SVGAnimatedNumber> m_exponent;
-    RefPtr<SVGAnimatedNumber> m_offset;
-    RefPtr<SVGAnimatedEnumeration<ComponentTransferType> > m_type;
+    RefPtrWillBeMember<SVGAnimatedNumberList> m_tableValues;
+    RefPtrWillBeMember<SVGAnimatedNumber> m_slope;
+    RefPtrWillBeMember<SVGAnimatedNumber> m_intercept;
+    RefPtrWillBeMember<SVGAnimatedNumber> m_amplitude;
+    RefPtrWillBeMember<SVGAnimatedNumber> m_exponent;
+    RefPtrWillBeMember<SVGAnimatedNumber> m_offset;
+    RefPtrWillBeMember<SVGAnimatedEnumeration<ComponentTransferType> > m_type;
 };
 
 } // namespace blink