chromium/third_party/blink/web_tests/http/tests/security/contentSecurityPolicy/xsl-img-blocked.php

<?php
header("Content-Type: text/xml");
header("Content-Security-Policy: img-src 'none'");

echo '<?xml version="1.0" encoding="UTF-8"?>';
echo '<?xml-stylesheet type="text/xsl" href="resources/transform-to-img.xsl"?>';
?>
<body/>