Remove webkit prefixes for transform and perspective in chrome/ styles

chrome/browser/resources/chromeos/login/oobe_screen.css

 /* Copyright 2013 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 contains common styling for all the OOBE screens. */
 
 :root {
   --oobe-roboto-medium: 500 12px Roboto;
   --oobe-roboto-bold: 700 12px Roboto;
 }
 
 .step {
   box-sizing: border-box;
   position: absolute;
 }
 
 .step.animated:not(.faded) {
-  -webkit-transition: -webkit-transform 200ms ease-in-out,
+  -webkit-transition: transform 200ms ease-in-out,
                       opacity 200ms ease-in-out,
                       visibility 200ms ease-in-out;
 }
 
 .step.hidden {
   visibility: hidden;
 }
 
 .faded,
 .left,
 .right {
   opacity: 0;
 }
 
 .step.right {
-  -webkit-transform: translateX(50px);
+  transform: translateX(50px);
 }
 
 .step.left {
-  -webkit-transform: translateX(-50px)
+  transform: translateX(-50px)
 }
 
 .step.fullscreen {
   height: 100%;
   left: 0;
   right: 0;
   top: 0;
   width: 100%;
 }
 
@@ skipping 121 matching lines @@
 
 html[highlight=strong] #security-info a:focus,
 html[highlight=strong] #eula a:focus,
 html[highlight=strong] .step-extra-controls a:focus,
 html[highlight=strong] .menu-control:focus,
 html[highlight=strong] input[type='button']:focus,
 html[highlight=strong] button:focus {
   box-shadow: 0 0 23px rgb(77, 144, 254) !important;
 }