message: feat(aio): temporarily add debugging code for google crawler
diff: <!-- End Google Analytics -->
  <script>
  + window.onerror = function (message, url, lineNo, colNo, error) {
  + let container = document.createElement('div');
  +
  + container.style.color = 'red';
  + container.style.position = 'fixed';
  + container.style.background = '#eee';
  + container.style.padding = '2em';
  + container.style.top = '3em';
  + container.style.left = '1em';
  +
  + let msg = document.createElement('pre');
  + msg.innerText = [
  + 'UA: ' + window.navigator.userAgent,
  + 'Message: ' + message,
  + 'URL: ' + url,
  + 'Line: ' + lineNo,
  + 'Column: ' + colNo,
  + 'Stack: ' + (error && error.stack)
  + ].join('\n');
  +
  + container.appendChild(msg);
  +
  + setTimeout(function() {document.body.appendChild(container)}, 0);
  + };
  +
  if (window.document.documentMode) {
  var script = document.createElement('script');
  script.src = 'generated/ie-polyfills.min.js';
  