[extensions] Don't let clicks on <a href="#"> links escape un-prevented.

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 194 matching lines @@
         };
         showNotification(parseHtmlSubset(promo, tags, attrs), [], function() {
           chrome.send('closeNotificationPromo');
         }, 60000);
         chrome.send('notificationPromoViewed');
       }
 
       cr.dispatchSimpleEvent(document, 'ntpLoaded', true, true);
       document.documentElement.classList.remove('starting-up');
     });
+
+    preventDefaultOnPoundLinkClicks();  // From shared/js/util.js.
   }
 
   /**
    * Launches the chrome web store app with the chrome-ntp-launcher
    * source.
    * @param {Event} e The click event.
    */
   function onChromeWebStoreButtonClick(e) {
     chrome.send('recordAppLaunchByURL',
                 [encodeURIComponent(this.href),
@@ skipping 361 matching lines @@
     setStripeColor: setStripeColor,
     showNotification: showNotification,
     themeChanged: themeChanged,
     updateLogin: updateLogin
   };
 });
 
 document.addEventListener('DOMContentLoaded', ntp.onLoad);
 
 var toCssPx = cr.ui.toCssPx;