Add finch flag for rendering a recently closed link on the local ntp.

chrome/browser/resources/local_ntp/local_ntp.js

Index: chrome/browser/resources/local_ntp/local_ntp.js
diff --git a/chrome/browser/resources/local_ntp/local_ntp.js b/chrome/browser/resources/local_ntp/local_ntp.js
index cd5945f73fb5e6377d4f8c44800221dac41f5d99..b0a9e05d404e56770597da6895df8cb65c4021c7 100644
--- a/chrome/browser/resources/local_ntp/local_ntp.js
+++ b/chrome/browser/resources/local_ntp/local_ntp.js
@@ -34,6 +34,7 @@ var CLASSES = {
   FAVICON: 'mv-favicon',
   FILLER: 'mv-filler', // filler tiles
   GOOGLE_PAGE: 'google-page', // shows the Google logo and fakebox
+  HIDE_ATTRIBUTION: 'attribution-hide',
   HIDE_BLACKLIST_BUTTON: 'mv-x-hide', // hides blacklist button during animation
   HIDE_NOTIFICATION: 'mv-notice-hide',
   HIDE_NTP: 'hide-ntp', // hides NTP and disables scrollbars
@@ -59,8 +60,10 @@ var CLASSES = {
  */
 var IDS = {
   ATTRIBUTION: 'attribution',
+  ATTRIBUTION_TEXT: 'attribution-text',
   CURSOR: 'cursor',
   FAKEBOX: 'fakebox',
+  FOOTER: 'footer',
   LOGO: 'logo',
   NOTIFICATION: 'mv-notice',
   NOTIFICATION_CLOSE_BUTTON: 'mv-notice-x',
@@ -247,7 +250,7 @@ function onThemeChange() {
  */
 function updateAttribution(url) {
   if (!url) {
-    attribution.hidden = true;
+    attribution.classList.add(CLASSES.HIDE_ATTRIBUTION);
     return;
   }
   var attributionImage = new Image();
@@ -256,10 +259,10 @@ function updateAttribution(url) {
     if (oldAttributionImage)
       removeNode(oldAttributionImage);
     attribution.appendChild(attributionImage);
-    attribution.hidden = false;
+    attribution.classList.remove(CLASSES.HIDE_ATTRIBUTION);
   };
   attributionImage.onerror = function() {
-    attribution.hidden = true;
+    attribution.classList.add(CLASSES.HIDE_ATTRIBUTION);
   };
   attributionImage.src = url;
 }
@@ -1406,6 +1409,17 @@ function init() {
     ntpContents.insertBefore(logo, ntpContents.firstChild);
   }
 
+  var recentlyClosedText = templateData.recentlyClosed;
+  if (recentlyClosedText) {
+    var recentlyClosedLink = document.createElement('span');
+    recentlyClosedLink.id = 'recently-closed';
+    recentlyClosedLink.addEventListener('click', function() {
+      ntpApiHandle.navigateContentWindow('chrome://history');
+    });
+    recentlyClosedLink.textContent = recentlyClosedText;
+    var footer = $(IDS.FOOTER);
+    footer.insertBefore(recentlyClosedLink, footer.firstChild);
+  }
 
   // TODO(jeremycho): i18n.
   var notificationMessage = $(IDS.NOTIFICATION_MESSAGE);
@@ -1416,7 +1430,7 @@ function init() {
   var restoreAllLink = $(IDS.RESTORE_ALL_LINK);
   restoreAllLink.addEventListener('click', onRestoreAll);
   restoreAllLink.innerText = 'Restore all';
-  attribution.innerText = 'Theme created by';
+  $(IDS.ATTRIBUTION_TEXT).innerText = 'Theme created by';
 
   var notificationCloseButton = $(IDS.NOTIFICATION_CLOSE_BUTTON);
   notificationCloseButton.addEventListener('click', hideNotification);