Desktop User Manager: Use new Material icons for "locked" and "supervised".

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 56 matching lines @@
 .pod .user-image {
   height: 180px;
   width: 180px;
 }
 
 .pod input[type='password'] {
   height: 45px;  /* 1px shorter as to not overlap the pod's rounded corners */
   top: 1px;
 }
 
+.pod .indicator-container {
+  background-color: rgba(255, 255, 255, 0.85);
+  border-radius: 16px;
+  height: 32px;
+  left: 8px;
+  position: absolute;
+  top: 8px;
+}
+
+html[dir=rtl] .pod .indicators {
+  left: auto;
+  right: 8px;
+}
+
+.pod .indicator {
+  background-position: center;
+  background-repeat: no-repeat;
+  display: none;
+  float: left;
+  height: 32px;
+  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);
-  height: 31px;
-  left: 8px;
-  position: absolute;
-  top: 8px;
-  width: 31px;
-}
-
-html[dir=rtl] .pod.locked .locked-indicator {
-  left: auto;
-  right: 8px;
+  display: initial;
 }
 
 .pod.supervised-user .supervised-indicator {
   background-image: -webkit-image-set(
       url('chrome://theme/IDR_ICON_PROFILES_SUPERVISED') 1x,
       url('chrome://theme/IDR_ICON_PROFILES_SUPERVISED@2x') 2x);
-  height: 31px;
-  left: 8px;
-  position: absolute;
-  top: 8px;
-  width: 31px;
-}
-
-html[dir=rtl] .pod.supervised-user .supervised-indicator {
-  left: auto;
-  right: 8px;
+  display: initial;
 }
 
 .main-pane {
   left: 0;
   top: 0;
 }
 
 html[dir=rtl] .main-pane {
   right: 0;
 }
@@ skipping 55 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;
 }