Uprefix CSS transitions in ui/ and chrome/ styles

chrome/browser/resources/help/help_content.css

 /* Copyright 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. */
 
 #about-container {
   align-items: center;
   display: flex;
 }
 
 #page-container #about-container {
@@ skipping 102 matching lines @@
 #more-info-expander {
   -webkit-padding-start: 0;
   margin-top: 10px;
 }
 
 #more-info-container.visible {
   margin-bottom: 10px;
 }
 
 #more-info-container {
-  -webkit-transition: all 200ms;
   height: 0;
   margin-bottom: 0;
   overflow: hidden;
+  transition: all 200ms;
 }
 
 #build-date-container.empty {
   visibility: hidden;
 }
 
 #channel-change-confirmation {
   margin-top: 5px;
 }
 
@@ skipping 24 matching lines @@
 }
 
 #regulatory-label-container {
   padding-top: 32px;
 }
 
 #regulatory-label {
   display: block;
   width: 330px;
 }