Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/fast/events/defaultprevented.html 

<html>
<head>
<script>
if (window.testRunner)
  testRunner.dumpAsText();
</script>
</head>
<body onload="document.forms[0].reset()">
<form method=POST onreset="event.preventDefault(); if (event.defaultPrevented) document.getElementById('result').innerHTML = 'PASS'; return false">
</form>
<div id="result">FAIL</div>
</body>