embed-change-irrelevant-attribute-reattach.html

<!DOCTYPE html>
<div id="container">
  <embed id="plugin" type="application/x-webkit-test-webplugin"></embed>
</div>
<script>
  // Changing an uninteresting attribute on the plugin shouldn't dispose and
  // reinitialize the plugin on layout object reattach. Initializing the plugin
  // in this test will dump a line of text into the console, and the expectation
  // is to only get one such line, not two.
  testRunner.dumpAsText();
  document.body.offsetTop;
  plugin.setAttribute("foobar", "rekemarengs");
  container.style.display = "table";
  document.body.offsetTop;
</script>

chromium/third_party/blink/web_tests/plugins/embed-change-irrelevant-attribute-reattach.html