Notify user that Chrome is already synced if promo banner "sync me" link is c...

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 671 matching lines @@
 
 /**
  * Invoked when the link in the sync status section is clicked.
  */
 function syncSectionLinkClicked(e) {
   chrome.send('SyncLinkClicked');
   e.preventDefault();
 }
 
 /**
+ * Invoked when link to start sync in the promo message is clicked, and Chrome
+ * has already been synced to an account.
+ */
+function syncAlreadyEnabled(message) {
+  showNotification(message.syncEnabledMessage,
+                   localStrings.getString('close'));
+}
+
+/**
  * Returns the text used for a recently closed window.
  * @param {number} numTabs Number of tabs in the window.
  * @return {string} The text to use.
  */
 function formatTabsText(numTabs) {
   if (numTabs == 1)
     return localStrings.getString('closedwindowsingle');
   return localStrings.formatString('closedwindowmultiple', numTabs);
 }
 
@@ skipping 932 matching lines @@
   syncButton.onclick = syncSectionLinkClicked;
   fixLinkUnderlines($('promo-message'));
 }
 
 // A Windows-specific Webkit bug adds padding to buttons and will push the
 // bookmark sync button in the promo message too far to the right unless we
 // use this fix.  See https://bugs.webkit.org/show_bug.cgi?id=31703
 if (navigator.platform == 'Win32') {
   addClass(document.body, 'win-button-padding-bug');
 }