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chromium/third_party/blink/web_tests/fast/css/fieldset-display-row.html 

<html>
<head>
    <title>Test HTML Page</title>
    <style type="text/css">
        fieldset { display: table-row; }
    </style>
</head>
<body>
    <fieldset>If you can see this fieldset without crashing, then all is well.</fieldset>
</body>
</html>