Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGFECompositeElement.cpp

Index: Source/core/svg/SVGFECompositeElement.cpp
diff --git a/Source/core/svg/SVGFECompositeElement.cpp b/Source/core/svg/SVGFECompositeElement.cpp
index 510b72053c4f05126797e7e3d96a8c09c402fb78..6b8a569c53a717adbd706536b9f02e9945277d0a 100644
--- a/Source/core/svg/SVGFECompositeElement.cpp
+++ b/Source/core/svg/SVGFECompositeElement.cpp
@@ -61,6 +61,18 @@ inline SVGFECompositeElement::SVGFECompositeElement(Document& document)
     addToPropertyMap(m_svgOperator);
 }
 
+void SVGFECompositeElement::trace(Visitor* visitor)
+{
+    visitor->trace(m_k1);
+    visitor->trace(m_k2);
+    visitor->trace(m_k3);
+    visitor->trace(m_k4);
+    visitor->trace(m_in1);
+    visitor->trace(m_in2);
+    visitor->trace(m_svgOperator);
+    SVGFilterPrimitiveStandardAttributes::trace(visitor);
+}
+
 DEFINE_NODE_FACTORY(SVGFECompositeElement)
 
 bool SVGFECompositeElement::isSupportedAttribute(const QualifiedName& attrName)
@@ -128,7 +140,7 @@ void SVGFECompositeElement::svgAttributeChanged(const QualifiedName& attrName)
     ASSERT_NOT_REACHED();
 }
 
-PassRefPtr<FilterEffect> SVGFECompositeElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
+PassRefPtrWillBeRawPtr<FilterEffect> SVGFECompositeElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
 {
     FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value()));
     FilterEffect* input2 = filterBuilder->getEffectById(AtomicString(m_in2->currentValue()->value()));
@@ -136,7 +148,7 @@ PassRefPtr<FilterEffect> SVGFECompositeElement::build(SVGFilterBuilder* filterBu
     if (!input1 || !input2)
         return nullptr;
 
-    RefPtr<FilterEffect> effect = FEComposite::create(filter, m_svgOperator->currentValue()->enumValue(), m_k1->currentValue()->value(), m_k2->currentValue()->value(), m_k3->currentValue()->value(), m_k4->currentValue()->value());
+    RefPtrWillBeRawPtr<FilterEffect> effect = FEComposite::create(filter, m_svgOperator->currentValue()->enumValue(), m_k1->currentValue()->value(), m_k2->currentValue()->value(), m_k3->currentValue()->value(), m_k4->currentValue()->value());
     FilterEffectVector& inputEffects = effect->inputEffects();
     inputEffects.reserveCapacity(2);
     inputEffects.append(input1);