Oilpan: Remove guardRef and guardDeref from TreeScope.

Source/core/svg/SVGFEImageElement.cpp

Index: Source/core/svg/SVGFEImageElement.cpp
diff --git a/Source/core/svg/SVGFEImageElement.cpp b/Source/core/svg/SVGFEImageElement.cpp
index 938f093b5222a778e5a6011823edcc7bc652be07..1afd7ed03dac5d16cdcf3e04087fd27fb841c0cf 100644
--- a/Source/core/svg/SVGFEImageElement.cpp
+++ b/Source/core/svg/SVGFEImageElement.cpp
@@ -50,7 +50,9 @@ PassRefPtr<SVGFEImageElement> SVGFEImageElement::create(Document& document)
 
 SVGFEImageElement::~SVGFEImageElement()
 {
+#if !ENABLE(OILPAN)
     clearResourceReferences();

[haraken, 2014/04/25 05:21:42]

I'm not quite sure if we can completely skip clearResourceReferences() For
example, don't we need to detach this element from m_targetElementInstance?

I agree that we don't (shouldn't) call
document().accessSVGExtensions().removeAllTargetReferencesForElement(this) in
~SVGFEImageElement(), but I guess other code in clearResourceReferences() are
still needed.

[Mads Ager (chromium), 2014/04/25 10:58:25]

Yeah, I missed the fact that there was other code than just the
removeAllTargetReferencesForElement here. Restored the m_cachedImage code in an
#else branch here.

+#endif
 }
 
 bool SVGFEImageElement::currentFrameHasSingleSecurityOrigin() const