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chromium/third_party/blink/web_tests/http/tests/security/contentSecurityPolicy/image-document-default-src-none.html 

<body>
<script>
if (window.testRunner)
    testRunner.dumpAsText();
</script>
Ensure that we don't crash when loading an ImageDocument that sets CSP headers
<iframe src="resources/image-document-default-src-none-iframe.php"></iframe>
</body>