static void runAutofocus(HTMLDialogElement* dialog)
{
    Node* next = 0;
    for (Node* node = dialog->firstChild(); node; node = next) {
        if (node->isElementNode() && toElement(node)->isFormControlElement()) {
            HTMLFormControlElement* control = toHTMLFormControlElement(node);
            if (control->isAutofocusable()) {
                control->focus();
                control->setAutofocused();
                return;
            }
        }
        if (node->hasTagName(dialogTag))
            next = NodeTraversal::nextSkippingChildren(node, dialog);
        else
            next = NodeTraversal::next(node, dialog);
    }
}