Switch tabs from VR shell.

chrome/browser/resources/vr_shell/vr_shell_ui.js

 // Copyright 2016 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.
 
 var vrShellUi = (function() {
   'use strict';
 
   let ui = new scene.Scene();
   let uiManager;
   let nativeCommandHandler;
@@ skipping 708 matching lines @@
 
     getQualifiedTabId(tab) {
       return (tab.incognito ? 'i' : 'n') + tab.id;
     }
 
     makeDomTab(tab) {
       // Make a copy of the template tab and add this copy to the tab container
       // view.
       let domTab = this.domTabTemplate.cloneNode(true);
       domTab.removeAttribute('id');
+      domTab.addEventListener('click', function() {
+        api.doAction(api.Action.SHOW_TAB, {'id': domTab.tab.id});
+      });
+      domTab.tab = tab;
       this.domTabClip.appendChild(domTab);
       this.domTabs[this.getQualifiedTabId(tab)] = domTab;
       return domTab;
     }
 
     resizeClipElement() {
       // Resize clip element so that scrolling works.
       this.domTabClip.style.width =
           (Object.keys(this.tabs).length * this.domTabWidth) + 'px';
     }
@@ skipping 213 matching lines @@
     nativeCommandHandler.handleCommand(dict);
   }
 
   return {
     initialize: initialize,
     command: command,
   };
 })();
 
 window.addEventListener('load', vrShellUi.initialize);