imported patch bug-199959-backout

content/base/src/nsDOMAttribute.cpp

@@ -196,7 +196,11 @@ NS_IMETHODIMP
 nsDOMAttribute::GetSpecified(PRBool* aSpecified)
 {
   NS_ENSURE_ARG_POINTER(aSpecified);
-  *aSpecified = PR_TRUE;
+
+  nsIContent* content = GetContentInternal();
+  *aSpecified = content && content->HasAttr(mNodeInfo->NamespaceID(),
+                                            mNodeInfo->NameAtom());
+
   return NS_OK;
 }