Remove webkit prefixes for transform and perspective in chrome/ styles

chrome/browser/resources/uber/uber.css

 /* 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. */
 
 body {
   /* http://crbug.com/129406 --- horizontal scrollbars flicker when changing
    * sections. */
   overflow-x: hidden;
 }
 
@@ skipping 10 matching lines @@
   right: 15px;
   width: 155px;
   z-index: 3;
 }
 
 #navigation.background {
   z-index: 1;
 }
 
 #navigation.changing-content {
-  -webkit-transition: -webkit-transform 100ms, width 100ms;
+  -webkit-transition: transform 100ms, width 100ms;
 }
 
 .iframe-container {
   -webkit-margin-start: -20px;
   -webkit-transition: margin 100ms, opacity 100ms;
   bottom: 0;
   left: 0;
   opacity: 0;
   position: absolute;
   right: 0;
@@ skipping 12 matching lines @@
 .iframe-container.expanded {
   left: 0;
 }
 
 iframe {
   border: none;
   display: block;
   height: 100%;
   width: 100%;
 }