Remove NTP4 intro bubble

chrome/browser/resources/ntp4/new_tab.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview New tab page
  * This is the main code for the new tab page used by touch-enabled Chrome
  * browsers.  For now this is still a prototype.
  */
 
@@ skipping 163 matching lines @@
         chrome.send('showAdvancedLoginUI');
       };
       $('login-status-dismiss').onclick = loginBubble.hide.bind(loginBubble);
 
       var bubbleContent = $('login-status-bubble-contents');
       loginBubble.content = bubbleContent;
 
       // The anchor node won't be updated until updateLogin is called so don't
       // show the bubble yet.
       shouldShowLoginBubble = true;
-    } else if (loadTimeData.valueExists('ntp4_intro_message')) {
-      infoBubble = new cr.ui.Bubble;
-      infoBubble.anchorNode = newTabView.mostVisitedPage.navigationDot;
-      infoBubble.setArrowLocation(cr.ui.ArrowLocation.BOTTOM_START);
-      infoBubble.handleCloseEvent = function() {
-        this.hide();
-        chrome.send('introMessageDismissed');
-      };
-
-      var bubbleContent = $('ntp4-intro-bubble-contents');
-      infoBubble.content = bubbleContent;
-
-      bubbleContent.querySelector('div > div').innerHTML =
-          loadTimeData.getString('ntp4_intro_message');
-
-      var learnMoreLink = bubbleContent.querySelector('a');
-      learnMoreLink.href = loadTimeData.getString('ntp4_intro_url');
-      learnMoreLink.onclick = infoBubble.hide.bind(infoBubble);
-
-      infoBubble.show();
-      chrome.send('introMessageSeen');
     }
 
     var loginContainer = getRequiredElement('login-container');
     loginContainer.addEventListener('click', showSyncLoginUI);
     chrome.send('initializeSyncLogin');
 
     doWhenAllSectionsReady(function() {
       // Tell the slider about the pages.
       newTabView.updateSliderCards();
       // Mark the current page.
@@ skipping 392 matching lines @@
     setStripeColor: setStripeColor,
     showNotification: showNotification,
     themeChanged: themeChanged,
     updateLogin: updateLogin
   };
 });
 
 document.addEventListener('DOMContentLoaded', ntp.onLoad);
 
 var toCssPx = cr.ui.toCssPx;