page_with_csp_and_error_iframe.html

<html>
<head>
  <meta http-equiv="Content-Security-Policy" content="script-src 'none';"/>
</head>
<body>
  <p>This is a page with CSP that disallows scripts and an iframe that loads an
  error page.
  <p><iframe src="http://invalid.foo/" id="test_iframe"></iframe>
</body>
</html>

chromium/chrome/test/data/page_with_csp_and_error_iframe.html