nsIXBLDocumentInfo* docInfo = (nsIXBLDocumentInfo*)aData;
PRBool PR_CALLBACK FlushSkinXBL(nsHashKey* aKey, void* aData, void* aClosure){  nsIXBLDocumentInfo* docInfo = (nsIXBLDocumentInfo*)aData;  nsCOMPtr<nsIDocument> doc;  docInfo->GetDocument(getter_AddRefs(doc));  nsCOMPtr<nsIURI> uri;  doc->GetDocumentURL(getter_AddRefs(uri));  nsCAutoString str;  uri->GetPath(str);  if (!strncmp(str.get(), "/skin", 5)) {    // This is a skin binding. Add the key to the list.    nsHashKeys* list = (nsHashKeys*)aClosure;    list->AppendKey(aKey);  }  return PR_TRUE;}