file_data_doc_ignore_meta_csp.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>Bug 1382869: data document should ignore meta csp</title>

  <meta charset="utf-8">

</head>

<body>

<script type="application/javascript">

  // 1) create a data document

  const doc = document.implementation.createHTMLDocument();

  // 2) add meta csp to that document

  const metaEl = doc.createElement('meta');

  metaEl.setAttribute('http-equiv', 'Content-Security-Policy');

  metaEl.setAttribute('content', "img-src 'none'");

  doc.head.appendChild(metaEl);

  // 3) let the parent know we are done here

  var result = "dataDocCreated";

  window.parent.postMessage({result}, "*");

</script>

</body>

</html>