Replace -webkit-transform with transform in Chrome UI

ui/file_manager/gallery/css/gallery.css

 /* Copyright (c) 2014 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 {
   -webkit-user-select: none;
   font-size: 84%;
   margin: 0;
 }
 
@@ skipping 26 matching lines @@
   outline: none;
   position: absolute;
   width: 17px;
 }
 
 .bubble .pointer:not(.bottom) {
   top: -11px;
 }
 
 .bubble .pointer.bottom {
-  -webkit-transform: rotate(180deg);
+  transform: rotate(180deg);
   bottom: -11px;
 }
 
 .bubble .close-x {
   background: -webkit-image-set(
     url(../../file_manager/foreground/images/common/close_x_gray.png) 1x,
     url(../../file_manager/foreground/images/common/2x/close_x_gray.png) 2x);
   height: 21px;
   opacity: 0.3;
   position: absolute;
@@ skipping 1316 matching lines @@
 .thumbnail-view .animation-thumbnail {
   background-repeat: no-repeat;
   background-size: cover;
   display: none;
   position: absolute;
 }
 
 .thumbnail-view .animation-thumbnail.animating {
   display: block;
 }