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chromium
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chromium/third_party/blink/web_tests/fast/dynamic/001.html 

<html>
<body>
<table id="tbl" cellspacing=0 border=0 style="background: red" cellpadding=10>
<tr><td width=100 bgcolor=green></td>
</table>

<script>
document.getElementById("tbl").removeAttribute("cellpadding");
</script>