Implements \Drupal\Core\Form\FormInterface::submitForm().
Overrides FormInterface::submitForm
public function submitForm(array &$form, array &$form_state) {
$this->format
->disable()
->save();
drupal_set_message(t('Disabled text format %format.', array(
'%format' => $this->format->name,
)));
$form_state['redirect'] = 'admin/config/content/formats';
}