Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGFEGaussianBlurElement.cpp

Index: Source/core/svg/SVGFEGaussianBlurElement.cpp
diff --git a/Source/core/svg/SVGFEGaussianBlurElement.cpp b/Source/core/svg/SVGFEGaussianBlurElement.cpp
index d8ba680c419b0fdcf05db5f6dc39853b9bc29b96..83810b2f51b643126a6537696b163acb5795b4bf 100644
--- a/Source/core/svg/SVGFEGaussianBlurElement.cpp
+++ b/Source/core/svg/SVGFEGaussianBlurElement.cpp
@@ -38,6 +38,13 @@ inline SVGFEGaussianBlurElement::SVGFEGaussianBlurElement(Document& document)
     addToPropertyMap(m_in1);
 }
 
+void SVGFEGaussianBlurElement::trace(Visitor* visitor)
+{
+    visitor->trace(m_stdDeviation);
+    visitor->trace(m_in1);
+    SVGFilterPrimitiveStandardAttributes::trace(visitor);
+}
+
 DEFINE_NODE_FACTORY(SVGFEGaussianBlurElement)
 
 void SVGFEGaussianBlurElement::setStdDeviation(float x, float y)
@@ -79,7 +86,7 @@ void SVGFEGaussianBlurElement::svgAttributeChanged(const QualifiedName& attrName
     ASSERT_NOT_REACHED();
 }
 
-PassRefPtr<FilterEffect> SVGFEGaussianBlurElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
+PassRefPtrWillBeRawPtr<FilterEffect> SVGFEGaussianBlurElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
 {
     FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value()));
 
@@ -89,7 +96,7 @@ PassRefPtr<FilterEffect> SVGFEGaussianBlurElement::build(SVGFilterBuilder* filte
     if (stdDeviationX()->currentValue()->value() < 0 || stdDeviationY()->currentValue()->value() < 0)
         return nullptr;
 
-    RefPtr<FilterEffect> effect = FEGaussianBlur::create(filter, stdDeviationX()->currentValue()->value(), stdDeviationY()->currentValue()->value());
+    RefPtrWillBeRawPtr<FilterEffect> effect = FEGaussianBlur::create(filter, stdDeviationX()->currentValue()->value(), stdDeviationY()->currentValue()->value());
     effect->inputEffects().append(input1);
     return effect.release();
 }