Creating supervised users restricted for regular users if they are supervised.

chrome/browser/chromeos/login/users/fake_user_manager.h

Index: chrome/browser/chromeos/login/users/fake_user_manager.h
diff --git a/chrome/browser/chromeos/login/users/fake_user_manager.h b/chrome/browser/chromeos/login/users/fake_user_manager.h
index 05665b940693d9ea1a3b4a4721d19326e442fa3e..28ca0bdf5d0e7d04ff9589b2dd0207648820259f 100644
--- a/chrome/browser/chromeos/login/users/fake_user_manager.h
+++ b/chrome/browser/chromeos/login/users/fake_user_manager.h
@@ -51,6 +51,8 @@ class FakeUserManager : public ChromeUserManager {
   virtual const user_manager::UserList& GetUsers() const override;
   virtual user_manager::UserList GetUsersAllowedForMultiProfile()
       const override;
+  virtual user_manager::UserList GetUsersAllowedForSupervisedUsersCreation()
+      const override;
   virtual const user_manager::UserList& GetLoggedInUsers() const override;
 
   // Set the user as logged in.