<!DOCTYPE html>
<title>TXT document.contentType === 'text/plain'</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=log></div>
<iframe style="display:none"></iframe>
<script>
async_test(function() {
  var iframe = document.getElementsByTagName('iframe')[0];
  iframe.addEventListener('load', this.step_func_done(function() {
    assert_equals(iframe.contentDocument.contentType, "text/plain");
  }), false);
  iframe.src = "../resources/blob.txt";
});
</script>