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<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <title>bug 1686716</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
  <script>
  SimpleTest.waitForExplicitFinish();
  function test() {
    var ifr = document.getElementsByTagName("iframe")[0];
    ifr.contentWindow.addEventListener("drop",
      function(event) {
        ifr.remove();
        event.preventDefault();
      });
    sendDragEvent({type: "drop"}, ifr.contentDocument.body, ifr.contentWindow);
    ok(true, "Should not crash.");
    SimpleTest.finish();
  }
  </script>
</head>
<body onload="test()">
<iframe></iframe>
<p id="display"></p>
</body>
</html>