mozilla-release/dom/indexedDB/test/third_party_iframe2.html

<!--
  Any copyright is dedicated to the Public Domain.
  http://creativecommons.org/publicdomain/zero/1.0/
-->
<html>
<head>
  <title>Indexed Database Test</title>

  <script type="text/javascript">
    function report(result) {
      let message = { source: "iframe" };
      message.result = result;
      window.parent.postMessage(JSON.stringify(message), "*");
    }

    function runIndexedDBTest() {
      try {
        let request = indexedDB.open(window.location.pathname, 1);
        request.onsuccess = function(event) {
          report(!!(event.target.result instanceof IDBDatabase));
        };
      }
      catch (e) {
        report(false);
      }
    }
  </script>

</head>

<body onload="runIndexedDBTest();">
</body>

</html>