Rename "managed (mode|user)" to "supervised user" (part 8)

chrome/browser/resources/options/supervised_user_create_confirm.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. */
 
-#managed-user-created {
+#supervised-user-created {
   width: 722px;
 }
 
-#managed-user-created-title {
+#supervised-user-created-title {
   padding: 20px;
   word-wrap: break-word;
 }
 
 @media only screen and (max-height:400px) {
 
 /* Omit the image on very small screens. */
-#managed-user-created-image {
+#supervised-user-created-image {
   display: none;
 }
 
 } /* @media only screen and (max-height:400px) */
 
-#managed-user-created-image {
+#supervised-user-created-image {
   -webkit-border-radius: 3px 3px 0 0;
-  -webkit-box-flex: 5;
   background-image: -webkit-image-set(
       url('../../../../ui/resources/default_100_percent/supervised_illustration_done.png') 1x,
       url('../../../../ui/resources/default_200_percent/supervised_illustration_done.png') 2x);
   background-position: center;
+  flex: 5;
   height: 344px;
 }
 
-#managed-user-created-text {
+#supervised-user-created-text {
   padding: 0 20px 0 20px;
   white-space: pre-wrap;
   word-wrap: break-word;
 }
 
-#managed-user-created-switch {
+#supervised-user-created-switch {
   max-width: 600px;
   word-wrap: break-word;
 }
 
-#managed-user-created-action-area {
+#supervised-user-created-action-area {
   padding: 20px;
 }