Displaying Title in Title Tag on Edit page?

I found my the solution (filter hook admin_title) in Change page title in admin area

function my_admin_title($admin_title, $title) {
  global $post, $action;
  if($action == 'edit' ) {
    $admin_title_tag = '* ' . $post->post_title;
    return $admin_title_tag; 
  }
}
add_filter('admin_title', 'my_admin_title', 10, 2);