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

Source/WebCore/dom/Attr.cpp

Index: Source/WebCore/dom/Attr.cpp
diff --git a/Source/WebCore/dom/Attr.cpp b/Source/WebCore/dom/Attr.cpp
index 01aa2a2633cfbf666d5c80d1732fa73993a8252f..6865215eacf123edf269b1d02a2b596c2060a32e 100644
--- a/Source/WebCore/dom/Attr.cpp
+++ b/Source/WebCore/dom/Attr.cpp
@@ -44,6 +44,7 @@ Attr::Attr(Element* element, const QualifiedName& name)
     , m_ignoreChildrenChanged(0)
     , m_specified(true)
 {
+    ScriptWrappable::init(this);
 }
 
 Attr::Attr(Document* document, const QualifiedName& name, const AtomicString& standaloneValue)
@@ -54,6 +55,7 @@ Attr::Attr(Document* document, const QualifiedName& name, const AtomicString& st
     , m_ignoreChildrenChanged(0)
     , m_specified(true)
 {
+    ScriptWrappable::init(this);
 }
 
 PassRefPtr<Attr> Attr::create(Element* element, const QualifiedName& name)