Clean patch with DCC static content

chrome/common/extensions/docs/static/js/site.js

+(function() {
+
+function addGplusButton() {
+  var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
+  po.src = 'https://apis.google.com/js/plusone.js?onload=onLoadCallback';
+  var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
+}
+
+function openFeedback(e) {
+  e.preventDefault();
+  userfeedback.api.startFeedback({productId: 86265});
+}
+
+function addGoogleFeedback() {
+  [].forEach.call(document.querySelectorAll('[data-feedback]'), function(el, i) {
+    el.addEventListener('click', openFeedback);
+  });
+}
+
+
+// Auto syntax highlight all pre tags.
+function prettyPrintCode() {
+  var pres = document.querySelectorAll('pre');
+  for (var i = 0, pre; pre = pres[i]; ++i) {
+    pre.classList.add('prettyprint');
+  }
+  window.prettyPrint && prettyPrint();
+}
+
+prettyPrintCode();
+addGoogleFeedback();
+addGplusButton();
+
+})();