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chromium/third_party/blink/web_tests/external/wpt/editing/crashtests/inserthtml-in-inline-editing-host-at-load-event.html 

<html>
<head>
</head>

<body onload="try { document.execCommand('inserthtml', false, '0'); } catch(e) { }"><span id="textarea" contenteditable="true">is</span></body>

</html>