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chromium/third_party/blink/web_tests/fast/dom/StyleSheet/detached-sheet-owner-node.html 

<!DOCTYPE html>
<script src="../../../resources/js-test.js"></script>
<script>

description('This tests that accessing ownerNode on a disconnected style sheet does not crash');

jsTestIsAsync = true;

window.onload = function() {
    var innerDocument = document.querySelector('iframe').contentDocument;
    document.body.removeChild(document.querySelector('iframe'));

    innerDocument.querySelector('style').textContent = '';  // this triggers createSheet
    innerDocument.documentElement.textContent = '';

    gc();
    innerDocument.styleSheets[0] && innerDocument.styleSheets[0].ownerNode;
    finishJSTest();
};

</script>
<iframe srcdoc="<style>*{}</style>"></iframe>