File: 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>