Tweaks for promo messages on NTP

chrome/browser/resources/new_new_tab.js

 
 // Helpers
 
 // TODO(arv): Remove these when classList is available in HTML5.
 // https://bugs.webkit.org/show_bug.cgi?id=20709
 function hasClass(el, name) {
   return el.nodeType == 1 && el.className.split(/\s+/).indexOf(name) != -1;
 }
 
 function addClass(el, name) {
@@ skipping 1575 matching lines @@
   var span = document.createElement('span');
   span.className = 'link-color';
   while (el.hasChildNodes()) {
     span.appendChild(el.firstChild);
   }
   el.appendChild(span);
 }
 
 updateAttribution();
 
-/* Close the promo notices when close button on the promo-line is clicked. */
+// Closes the promo line when close button is clicked.
 $('promo-close').onclick = function (e) {
-  $('promo-line').style.display = 'none';
-  $('bottom-right-promo').style.display = 'none';
-  chrome.send('stopPromoMessages');
+  $('footer').className = 'hide-footer';
+  chrome.send('stopPromoLineMessage');
   e.preventDefault();
 };