uber: remove mouse focus outlines on nav tabs.

chrome/browser/resources/uber/uber_frame.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.
 
 // This file contains the navigation controls that are visible on the left side
 // of the uber page. It exists separately from uber.js so that it may be loaded
 // in an iframe. Iframes can be layered on top of each other, but not mixed in
 // with page content, so all overlapping content on uber must be framed.
 
 <include src="../../../../ui/webui/resources/js/util.js">
 <include src="uber_utils.js">
 
 cr.define('uber_frame', function() {
 
   /**
    * Handles page initialization.
    */
   function onLoad() {
     var navigationItems = document.querySelectorAll('li');
 
     for (var i = 0; i < navigationItems.length; ++i) {
       navigationItems[i].addEventListener('click', onNavItemClicked);
     }
 
+    cr.ui.FocusOutlineManager.forDocument(this);
+
     window.addEventListener('message', handleWindowMessage);
     uber.invokeMethodOnParent('navigationControlsLoaded');
 
     document.documentElement.addEventListener('mousewheel', onMouseWheel);
     document.documentElement.addEventListener('mousedown', onMouseDown);
   }
 
   /**
    * Handles clicks on the navigation controls (switches the page and updates
    * the URL).
@@ skipping 89 matching lines @@
     document.body.style.webkitTransform = 'translateX(' + -scrollLeft + 'px)';
   }
 
   /**
    * Enable/disable an animation to ease the nav bar back into view when
    * changing content while horizontally scrolled.
    * @param {boolean} enabled Whether easing should be enabled.
    */
   function setContentChanging(enabled) {
     assert(isRTL());
-    document.documentElement.classList[enabled ? 'add' : 'remove'](
-        'changing-content');
+    document.documentElement.classList.toggle('changing-content', enabled);
   }
 
   /**
    * Handles mouse wheels on the top level element. Forwards them to uber.js.
    * @param {Event} e The mouse wheel event.
    */
   function onMouseWheel(e) {
     uber.invokeMethodOnParent('mouseWheel',
         {deltaX: e.wheelDeltaX, deltaY: e.wheelDeltaY});
   }
@@ skipping 29 matching lines @@
   }
 
   return {
     onLoad: onLoad,
     setNavigationOverride: setNavigationOverride,
   };
 
 });
 
 document.addEventListener('DOMContentLoaded', uber_frame.onLoad);