First part of work to move V8 binding integrity off of vtables.

Source/WebCore/svg/SVGFilterElement.cpp

Index: Source/WebCore/svg/SVGFilterElement.cpp
diff --git a/Source/WebCore/svg/SVGFilterElement.cpp b/Source/WebCore/svg/SVGFilterElement.cpp
index e0b28850ec27ee25c6f63498845f6272e55bda32..5286f76f346195e890a348fcf4d8aa1da235ad81 100644
--- a/Source/WebCore/svg/SVGFilterElement.cpp
+++ b/Source/WebCore/svg/SVGFilterElement.cpp
@@ -74,6 +74,7 @@ inline SVGFilterElement::SVGFilterElement(const QualifiedName& tagName, Document
     // Spec: If the x/y attribute is not specified, the effect is as if a value of "-10%" were specified.
     // Spec: If the width/height attribute is not specified, the effect is as if a value of "120%" were specified.
     ASSERT(hasTagName(SVGNames::filterTag));
+    ScriptWrappable::init(this);
     registerAnimatedPropertiesForSVGFilterElement();
 }