chromium/ppapi/tests/extensions/popup/popup.html

<!DOCTYPE html>
<html>
<head>
  <title>Popup with NaCl embed App test</title>
  <script src="popup.js"></script>
</head>
<body>
  <embed id="nacl_module" src="ppapi_tests_extensions_popup.nmf"
      type="application/x-nacl" />
</body>
</html>