Reduce usage of webkit CSS prefixes in chrome/browser/resources

chrome/browser/resources/ntp4/nav_dot.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. */
 
 /* TODO(estade): handle overflow better? I tried overflow-x: hidden and
  * overflow-y: visible (for the new dot animation), but this makes a scroll
  * bar appear */
 #dot-list {
   /* Expand to take up all available horizontal space.  */
   -webkit-box-flex: 1;
   /* Center child dots. */
   -webkit-box-pack: center;
   display: -webkit-flex;
   height: 100%;
   list-style-type: none;
   margin: 0;
   padding: 0;
 }
 
 html.starting-up #dot-list {
   display: none;
 }
 
 .dot {
   -webkit-margin-end: 10px;
   -webkit-padding-start: 2px;
-  -webkit-transition: -webkit-margin-end 250ms, max-width 250ms, opacity 250ms;
   box-sizing: border-box;
   cursor: pointer;
   /* max-width: Set in new_tab.js. See measureNavDots() */
   outline: none;
   text-align: left;
+  transition: -webkit-margin-end 250ms, max-width 250ms, opacity 250ms;
 }
 
 .dot:last-child {
   -webkit-margin-end: 0;
 }
 
 .dot:only-of-type {
   cursor: default;
   opacity: 0;
   pointer-events: none;
 }
 
 .dot.small {
   -webkit-margin-end: 0;
   max-width: 0;
 }
 
 .dot .selection-bar {
-  -webkit-transition: border-color 200ms;
   border-bottom: 5px solid;
   border-color: rgba(0, 0, 0, 0.1);
   height: 10px;
+  transition: border-color 200ms;
 }
 
 .dot input {
   -webkit-appearance: caret;
   -webkit-margin-start: 2px;
-  -webkit-transition: color 200ms;
   background-color: transparent;
   cursor: inherit;
   font: inherit;
   height: auto;
   margin-top: 2px;
   padding: 1px 0;
+  transition: color 200ms;
   width: 90%;
 }
 
 .dot input:focus {
   cursor: auto;
 }
 
 /* Everything below here should be themed but we don't have appropriate colors
  * yet. */
 .dot input {
   color: #b2b2b2;
 }
 
 .dot:focus input,
 .dot:hover input,
 .dot.selected input {
   color: #7f7f7f;
 }
 
 .dot:focus .selection-bar,
 .dot:hover .selection-bar,
 .dot.drag-target .selection-bar {
   border-color: #b2b2b2;
 }
 
 .dot.selected .selection-bar {
   border-color: #7f7f7f;
 }