Tweaks for promo messages on NTP

chrome/browser/resources/new_new_tab.js

Index: chrome/browser/resources/new_new_tab.js
===================================================================
--- chrome/browser/resources/new_new_tab.js	(revision 32147)
+++ chrome/browser/resources/new_new_tab.js	(working copy)
@@ -1593,10 +1593,9 @@
 
 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();
 };