Remove webkit prefixes for transform and perspective in chrome/ styles

chrome/browser/resources/ntp4/new_tab.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. */
 
 html {
   /* It's necessary to put this here instead of in body in order to get the
      background-size of 100% to work properly */
   height: 100%;
   overflow: hidden;
 }
@@ skipping 244 matching lines @@
   left: 18px;
   top: 18px;
 }
 
 html[dir='rtl'] #trash > .lid,
 html[dir='rtl'] #trash > .can {
   right: 18px;
 }
 
 #footer.showing-trash-mode #trash.drag-target .lid {
-  -webkit-transform: rotate(-45deg);
+  transform: rotate(-45deg);
 }
 
 html[dir='rtl'] #footer.showing-trash-mode #trash.drag-target .lid {
-  -webkit-transform: rotate(45deg);
+  transform: rotate(45deg);
 }
 
 #fontMeasuringDiv {
   /* The font attributes match the nav inputs. */
   font-size: 0.9em;
   font-weight: bold;
   pointer-events: none;
   position: absolute;
   visibility: hidden;
 }
@@ skipping 73 matching lines @@
   padding: 0;
 }
 
 .other-sessions-promo-message:only-child {
   display: block;
 }
 
 .other-sessions-promo-message p {
   margin: 0;
 }