Run cron manually.
\Symfony\Component\HttpFoundation\RedirectResponse A Symfony direct response object.
public function runManually() {
if (drupal_cron_run()) {
drupal_set_message(t('Cron ran successfully.'));
}
else {
drupal_set_message(t('Cron run failed.'), 'error');
}
return new RedirectResponse(url('admin/reports/status', array(
'absolute' => TRUE,
)));
}