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chromium/third_party/blink/web_tests/svg/custom/xhtml-no-svg-renderer.xhtml 

<html xmlns='http://www.w3.org/1999/xhtml'>
<body>
<div style="width:100px;height:100px;background-color:green">
<rect xmlns="http://www.w3.org/2000/svg" width="100px" height="100px" fill="red"/>
</div>
</body>
</html>