Add Element::subResourceAttributeName() virtual function

Source/core/html/HTMLScriptElement.cpp

Index: Source/core/html/HTMLScriptElement.cpp
diff --git a/Source/core/html/HTMLScriptElement.cpp b/Source/core/html/HTMLScriptElement.cpp
index 4979f9e0612282461d384eed1b842c5e7bde0428..46a6892e2c556cf30c7ca9f3f3e1d0829cefc719 100644
--- a/Source/core/html/HTMLScriptElement.cpp
+++ b/Source/core/html/HTMLScriptElement.cpp
@@ -59,6 +59,11 @@ bool HTMLScriptElement::hasLegalLinkAttribute(const QualifiedName& name) const
     return name == srcAttr || HTMLElement::hasLegalLinkAttribute(name);
 }
 
+const QualifiedName& HTMLScriptElement::subResourceAttributeName() const
+{
+    return srcAttr;
+}
+
 void HTMLScriptElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
 {
     HTMLElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);