Index: wp-admin/users.php
===================================================================
--- wp-admin/users.php	(revision 35868)
+++ wp-admin/users.php	(working copy)
@@ -283,8 +283,9 @@
 	 * @since 4.0.0
 	 *
 	 * @param WP_User $current_user WP_User object for the user being deleted.
+	 * @param array $userids Array of IDs for users being deleted.
 	 */
-	do_action( 'delete_user_form', $current_user );
+	do_action( 'delete_user_form', $current_user, $userids );
 	?>
 	<input type="hidden" name="action" value="dodelete" />
 	<?php submit_button( __('Confirm Deletion'), 'primary' ); ?>