Rename for some supervised users ambiguity. Adding child account icon to the avatar menu bubble.

chrome/browser/resources/user_manager/user_manager.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.
  */
 
 /* Overrides for the desktop user manager screen. */
 
 .oobe-display {
   background-color: #eee;
 }
@@ skipping 94 matching lines @@
   width: 32px;
 }
 
 .pod.locked .locked-indicator {
   background-image: -webkit-image-set(
       url(chrome://theme/IDR_ICON_PROFILES_LOCKED) 1x,
       url(chrome://theme/IDR_ICON_PROFILES_LOCKED@2x) 2x);
   display: initial;
 }
 
-.pod.legacy-supervised .supervised-indicator {
+.pod.legacy-supervised .legacy-supervised-indicator {
   background-image: -webkit-image-set(
-      url(chrome://theme/IDR_ICON_PROFILES_SUPERVISED) 1x,
-      url(chrome://theme/IDR_ICON_PROFILES_SUPERVISED@2x) 2x);
+      url(chrome://theme/IDR_ICON_PROFILES_LEGACY_SUPERVISED) 1x,
+      url(chrome://theme/IDR_ICON_PROFILES_LEGACY_SUPERVISED@2x) 2x);
   display: initial;
 }
 
 .pod.child .child-indicator {
   background-image: -webkit-image-set(
       url(chrome://theme/IDR_ICON_PROFILES_CHILD) 1x,
       url(chrome://theme/IDR_ICON_PROFILES_CHILD@2x) 2x);
   display: initial;
 }
 
@@ skipping 63 matching lines @@
 .action-box-remove-user-warning .remove-warning-button {
   height: 30px;
 }
 
 .action-box-remove-user-warning .remove-warning-button:focus {
   /* Override the default blue border inherited from
   button.custom-appearance:focus. */
   border: 1px solid transparent !important;
   box-shadow: inset 0 0 0 1px #fff;
 }