file_data_uri.html

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<html>

<head>

  <meta charset="utf-8">

  <title>Bug 1709069: Test that Data URI which makes a top-level request gets updated in https-first</title>

</head>

<body>

<script class="testbody" type="text/javascript">

  window.onload = () => {

    let myLoc = window.location.href;

    window.opener.parent.postMessage({location: myLoc}, "*");

    window.close();

};

</script>

</body>

</html>