Fixes the broken focus issue of 'OK, GOT IT' and 'UNDO' in the sync confirmation dialog.

chrome/browser/resources/sync_confirmation/sync_confirmation.css

 /* Copyright 2015 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 {
   margin: 0;
   padding: 0;
 }
 
 .picture img {
@@ skipping 93 matching lines @@
 }
 
 #confirmButton,
 #undoButton {
   font-weight: 500;
   line-height: 16px;
   margin: 0;
   padding: 8px 16px;
 }
 
-#confirmButton {
-  background-color: rgb(66, 133, 244);
-  color: white;
-}
-
 #undoButton {
   -webkit-margin-start: 8px;
-  color: #5A5A5A;
 }
 
 #illustration {
   height: 96px;
   margin: 0 auto;
   position: relative;
   width: 264px;
 }
 
 #checkmark-circle {
@@ skipping 215 matching lines @@
 @keyframes fade-in-icon-bottom-right {
   from {
     opacity: 0;
     transform: translate(0, 0);
   }
   to {
     opacity: 0.1;
     transform: translate(4px, 4px);
   }
 }