Drupal 7, modify views filter settings programality.

skg_generate_product_types.module

  $views_name = 'newest_products';
  $display_name = 'page';
  $filter_name = 'type';

  // Add content type to allowed list in filter settings.
  $view = views_get_view($views_name, TRUE);
  $views_filters = $view->display[$display_name]->display_options['filters'];
  $views_filters[$filter_name]['value'][$bundle_name] = $bundle_name;
  $view->save();