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chromium/third_party/blink/web_tests/fast/parser/style-in-create-contextual-fragment-head.html 

<script src="../../resources/dump-as-markup.js"></script>
<body>
<script>
var range = document.createRange();
range.selectNode(document.head);
var documentFragment = range.createContextualFragment("<title>hi</title><style></style><body>XXX<div>ttt</div></body>");
document.head.appendChild(documentFragment);
</script>
</body>