Update chrome://extensions for supervised users

ui/webui/resources/css/controlled_indicator.css

 /* Copyright 2013 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. */
 
 /* Controlled setting indicator and bubble. */
 
 .controlled-setting-with-label input:disabled + span {
   color: #999;
 }
 
@@ skipping 14 matching lines @@
 }
 
 .controlled-setting-indicator[controlled-by='extension'] > div {
   background-image: url(chrome://theme/IDR_CONTROLLED_SETTING_EXTENSION);
 }
 
 .controlled-setting-indicator[controlled-by='shared'] > div {
   background-image: url(chrome://theme/IDR_CONTROLLED_SETTING_SHARED);
 }
 
+.controlled-setting-indicator[controlled-by='child-custodian'] > div {
+  background-image: url(chrome://theme/IDR_CONTROLLED_SETTING_CHILD);
+}
+
+.controlled-setting-indicator[controlled-by='supervised-user-custodian'] > div {
+  background-image: url(chrome://theme/IDR_CONTROLLED_SETTING_SUPERVISED);
+}
+
 .controlled-setting-indicator:-webkit-any([controlled-by='recommended'],
     [controlled-by='hasRecommendation']) > div {
   background-image: url(chrome://theme/IDR_CONTROLLED_SETTING_MANDATORY);
 }
 
 .controlled-setting-bubble-action {
   padding: 0 !important;
 }
 
 .controlled-setting-bubble-header {
@@ skipping 34 matching lines @@
 .controlled-setting-bubble-extension-disable-button {
   bottom: 0;
   position: absolute;
   right: 0;
 }
 
 html[dir='rtl'] .controlled-setting-bubble-extension-disable-button {
   left: 0;
   right: auto;
 }