Start sending auxclick instead of click for non-primary buttons

chrome/browser/resources/ntp4/apps_page.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.
 
 cr.define('ntp', function() {
   'use strict';
 
   var APP_LAUNCH = {
     // The histogram buckets (keep in sync with extension_constants.h).
     NTP_APPS_MAXIMIZED: 0,
@@ skipping 372 matching lines @@
       this.style.top = toCssPx(y);
     },
 
     onBlur_: function(e) {
       this.classList.remove('click-focus');
       this.appContents_.classList.remove('suppress-active');
     },
 
     /**
      * Invoked when an app is clicked.
-     * @param {Event} e The click event.
+     * @param {Event} e The click/auxclick event.
      * @private
      */
     onClick_: function(e) {
       var url = !this.appData_.is_webstore ? '' :
           appendParam(this.appData_.url,
                       'utm_source',
                       'chrome-ntp-icon');
 
       chrome.send('launchApp',
                   [this.appId, APP_LAUNCH.NTP_APPS_MAXIMIZED, url,
@@ skipping 22 matching lines @@
      * Adds a node to the list of targets that will launch the app. This list
      * is also used in onMousedown to determine whether the app contents should
      * be shown as active (if we don't do this, then clicking anywhere in
      * appContents, even a part that is outside the ideally clickable region,
      * will cause the app icon to look active).
      * @param {HTMLElement} node The node that should be clickable.
      */
     addLaunchClickTarget_: function(node) {
       node.classList.add('launch-click-target');
       node.addEventListener('click', this.onClick_.bind(this));
+      node.addEventListener('auxclick', this.onClick_.bind(this));
     },
 
     /**
      * Handler for mousedown on the App. Adds a class that allows us to
      * not display as :active for right clicks (specifically, don't pulse on
      * these occasions). Also, we don't pulse for clicks that aren't within the
      * clickable regions.
      * @param {Event} e The mousedown event.
      */
     onMousedown_: function(e) {
@@ skipping 325 matching lines @@
     chrome.send('launchApp', [appId, APP_LAUNCH.NTP_APP_RE_ENABLE]);
   }
 
   return {
     APP_LAUNCH: APP_LAUNCH,
     App: App,
     AppsPage: AppsPage,
     launchAppAfterEnable: launchAppAfterEnable,
   };
 });