Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/graphics/filters/SVGFEImage.cpp

Index: Source/core/svg/graphics/filters/SVGFEImage.cpp
diff --git a/Source/core/svg/graphics/filters/SVGFEImage.cpp b/Source/core/svg/graphics/filters/SVGFEImage.cpp
index 1e5733aa76f8410e7d143cdec0aeb31259a967ef..3fe636604c8fd357b423fd481f87ac36097185aa 100644
--- a/Source/core/svg/graphics/filters/SVGFEImage.cpp
+++ b/Source/core/svg/graphics/filters/SVGFEImage.cpp
@@ -40,7 +40,7 @@
 
 namespace blink {
 
-FEImage::FEImage(Filter* filter, PassRefPtr<Image> image, PassRefPtr<SVGPreserveAspectRatio> preserveAspectRatio)
+FEImage::FEImage(Filter* filter, PassRefPtr<Image> image, PassRefPtrWillBeRawPtr<SVGPreserveAspectRatio> preserveAspectRatio)
     : FilterEffect(filter)
     , m_image(image)
     , m_treeScope(0)
@@ -48,7 +48,7 @@ FEImage::FEImage(Filter* filter, PassRefPtr<Image> image, PassRefPtr<SVGPreserve
 {
 }
 
-FEImage::FEImage(Filter* filter, TreeScope& treeScope, const String& href, PassRefPtr<SVGPreserveAspectRatio> preserveAspectRatio)
+FEImage::FEImage(Filter* filter, TreeScope& treeScope, const String& href, PassRefPtrWillBeRawPtr<SVGPreserveAspectRatio> preserveAspectRatio)
     : FilterEffect(filter)
     , m_treeScope(&treeScope)
     , m_href(href)
@@ -56,14 +56,20 @@ FEImage::FEImage(Filter* filter, TreeScope& treeScope, const String& href, PassR
 {
 }
 
-PassRefPtr<FEImage> FEImage::createWithImage(Filter* filter, PassRefPtr<Image> image, PassRefPtr<SVGPreserveAspectRatio> preserveAspectRatio)
+void FEImage::trace(Visitor* visitor)
 {
-    return adoptRef(new FEImage(filter, image, preserveAspectRatio));
+    visitor->trace(m_preserveAspectRatio);
+    FilterEffect::trace(visitor);
 }
 
-PassRefPtr<FEImage> FEImage::createWithIRIReference(Filter* filter, TreeScope& treeScope, const String& href, PassRefPtr<SVGPreserveAspectRatio> preserveAspectRatio)
+PassRefPtrWillBeRawPtr<FEImage> FEImage::createWithImage(Filter* filter, PassRefPtr<Image> image, PassRefPtrWillBeRawPtr<SVGPreserveAspectRatio> preserveAspectRatio)
 {
-    return adoptRef(new FEImage(filter, treeScope, href, preserveAspectRatio));
+    return adoptRefWillBeNoop(new FEImage(filter, image, preserveAspectRatio));
+}
+
+PassRefPtrWillBeRawPtr<FEImage> FEImage::createWithIRIReference(Filter* filter, TreeScope& treeScope, const String& href, PassRefPtrWillBeRawPtr<SVGPreserveAspectRatio> preserveAspectRatio)
+{
+    return adoptRefWillBeNoop(new FEImage(filter, treeScope, href, preserveAspectRatio));
 }
 
 static FloatRect getRendererRepaintRect(RenderObject* renderer)