Indicate that sync was disabled by administrator.

chrome/browser/resources/signin/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. */
 
 .picture img {
   border-radius: 50%;
   max-height: 100%;
   max-width: 100%;
 }
 
@@ skipping 62 matching lines @@
 }
 
 .message-container #activityControlsCheckbox {
   -webkit-margin-start: 40px;
 }
 
 #undoButton {
   -webkit-margin-start: 8px;
 }
 
+#syncDisabledDetails {
+  line-height: 20px;
+  margin-bottom: 8px;
+  margin-top: 16px;
+  padding: 0 24px;
+}
+
 #illustration {
   height: 96px;
   margin: 0 auto;
   position: relative;
   width: 264px;
 }
 
 #checkmark-circle {
   background: rgb(66, 133, 244);
   border: 2px solid #fff;
@@ skipping 213 matching lines @@
 @keyframes fade-in-icon-bottom-right {
   from {
     opacity: 0;
     transform: translate(0, 0);
   }
   to {
     opacity: 0.1;
     transform: translate(4px, 4px);
   }
 }