Options: Remove the hidden class, since we override the hidden attribute to set

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 491c90fb570a55cbc9b46de0c46e5d18c9de5326..317f0ba5af5b1c432d4f3c8e0e6146b8afb5ae7e 100644
--- a/chrome/browser/resources/options/chromeos/accounts_options.js
+++ b/chrome/browser/resources/options/chromeos/accounts_options.js
@@ -45,7 +45,7 @@ cr.define('options', function() {
           options.accounts.UserList.decorate(userList);
         }
       } else {
-        $('ownerOnlyWarning').classList.remove('hidden');
+        $('ownerOnlyWarning').hidden = false;
       }
 
       this.addEventListener('visibleChange', this.handleVisibleChange_);