remove ntp app install hint

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 135 matching lines @@
                                    loadTimeData.getString('suggestions'),
                                    false,
                                    (newTabView.appsPages.length > 0) ?
                                        newTabView.appsPages[0] : null);
          chrome.send('getSuggestions');
       };
       document.querySelector('head').appendChild(suggestions_script);
     }
 
     var webStoreLink = loadTimeData.getString('webStoreLink');
-    if (loadTimeData.getBoolean('isWebStoreExperimentEnabled')) {
-      var url = appendParam(webStoreLink, 'utm_source', 'chrome-ntp-launcher');
-      $('chrome-web-store-href').href = url;
-      $('chrome-web-store-href').addEventListener('click',
-          onChromeWebStoreButtonClick);
-
-      $('footer-content').classList.add('enable-cws-experiment');
-    }
-
-    if (loadTimeData.getBoolean('appInstallHintEnabled')) {
-      var url = appendParam(webStoreLink, 'utm_source', 'chrome-ntp-plus-icon');
-      $('app-install-hint-template').href = url;
-    }
+    var url = appendParam(webStoreLink, 'utm_source', 'chrome-ntp-launcher');
+    $('chrome-web-store-href').href = url;
+    $('chrome-web-store-href').addEventListener('click',
+        onChromeWebStoreButtonClick);
 
     if (loadTimeData.getString('login_status_message')) {
       loginBubble = new cr.ui.Bubble;
       loginBubble.anchorNode = $('login-container');
       loginBubble.setArrowLocation(cr.ui.ArrowLocation.TOP_END);
       loginBubble.bubbleAlignment =
           cr.ui.BubbleAlignment.BUBBLE_EDGE_TO_ANCHOR_EDGE;
       loginBubble.deactivateToDismissDelay = 2000;
       loginBubble.setCloseButtonVisible(false);
 
@@ skipping 432 matching lines @@
     setSuggestionsPages: setSuggestionsPages,
     setRecentlyClosedTabs: setRecentlyClosedTabs,
     setStripeColor: setStripeColor,
     showNotification: showNotification,
     themeChanged: themeChanged,
     updateLogin: updateLogin
   };
 });
 
 document.addEventListener('DOMContentLoaded', ntp.onLoad);