Hide supervised user creation from UserManager when force sign in is enabled.

chrome/browser/resources/md_user_manager/create_profile.js

 // Copyright 2016 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.
 
 /**
  * @fileoverview 'create-profile' is a page that contains controls for creating
  * a (optionally supervised) profile, including choosing a name, and an avatar.
  */
 
 /** @typedef {{url: string, label:string}} */
@@ skipping 120 matching lines @@
     /**
      * True if the profile shortcuts feature is enabled.
      * @private
      */
     isProfileShortcutsEnabled_: {
       type: Boolean,
       value: function() {
         return loadTimeData.getBoolean('profileShortcutsEnabled');
       },
       readOnly: true
+    },
+
+    /**
+     * True if the force sign in policy is enabled.
+     * @private {boolean}
+     */
+    isForceSigninEnabled_: {
+      type: Boolean,
+      value: function() {
+        return loadTimeData.getBoolean('isForceSigninEnabled');
+      },
     }
   },
 
   listeners: {
     'tap': 'onTap_',
     'importUserPopup.import': 'onImportUserPopupImport_'
   },
 
   /** @override */
   created: function() {
@@ skipping 381 matching lines @@
    * Computed binding that returns True if there are any signed-in users.
    * @param {!Array<!SignedInUser>} signedInUsers signed-in users.
    * @return {boolean}
    * @private
    */
   isSignedIn_: function(signedInUsers) {
     return signedInUsers.length > 0;
   }
 });
 }());