Returns HTML for prepending a heading to a toolbar tray.
array $variables: An associative array containing:
function theme_toolbar_tray_heading_wrapper(&$variables) {
if (!empty($variables['element']['#children'])) {
$element = $variables['element'];
return '<h3 class="element-invisible">' . $element['#heading'] . '</h3>' . $element['#children'];
}
}