/**
  * {@inheritdoc}
  */
 public function submitForm(array &$form, array &$form_state)
 {
     $mappings = language_get_browser_drupal_langcode_mappings();
     if (array_key_exists($this->browserLangcode, $mappings)) {
         unset($mappings[$this->browserLangcode]);
         language_set_browser_drupal_langcode_mappings($mappings);
     }
     $form_state['redirect_route']['route_name'] = 'language.negotiation_browser';
 }
 /**
  * {@inheritdoc}
  */
 public function submitForm(array &$form, FormStateInterface $form_state)
 {
     $mappings = language_get_browser_drupal_langcode_mappings();
     if (array_key_exists($this->browserLangcode, $mappings)) {
         unset($mappings[$this->browserLangcode]);
         language_set_browser_drupal_langcode_mappings($mappings);
     }
     $form_state->setRedirect('language.negotiation_browser');
 }