User Settings on CrOS now shows the managed banner for enrolled devices.

chrome/browser/resources/options/chromeos/accounts_options.js

Index: chrome/browser/resources/options/chromeos/accounts_options.js
diff --git a/chrome/browser/resources/options/chromeos/accounts_options.js b/chrome/browser/resources/options/chromeos/accounts_options.js
index 25fca8c7665192ef94d3dd234825fd846fd0c557..4c814c6499950ab84160a58cf371c2cca520ade5 100644
--- a/chrome/browser/resources/options/chromeos/accounts_options.js
+++ b/chrome/browser/resources/options/chromeos/accounts_options.js
@@ -41,11 +41,13 @@ cr.define('options', function() {
       // If the current user is not the owner, show some warning,
       // and do not show the user list.
       if (AccountsOptions.currentUserIsOwner()) {
+        options.accounts.UserList.decorate(userList);
+      } else {
         if (!AccountsOptions.whitelistIsManaged()) {
-          options.accounts.UserList.decorate(userList);
+          $('ownerOnlyWarning').hidden = false;
+        } else {
+          this.managed = true;
         }
-      } else {
-        $('ownerOnlyWarning').hidden = false;
       }
 
       this.addEventListener('visibleChange', this.handleVisibleChange_);