MDL-63564 mod_quiz: Added quizaccess_user_provider interface

This issue is a part of the MDL-62560 Epic.

mod/quiz/classes/privacy/quizaccess_user_provider.php

@@ -0,0 +1,41 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * The quizaccess_user_provider interface provides the expected interface for all 'quizaccess' quizaccesss.
+ *
+ * Quiz sub plugins should implement this if they store personal information and can retrieve a userid.
+ *
+ * @package    mod_quiz
+ * @copyright  2018 Shamim Rezaie <shamim@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_quiz\privacy;
+
+defined('MOODLE_INTERNAL') || die();
+
+use core_privacy\local\request\approved_userlist;
+
+interface quizaccess_user_provider extends \core_privacy\local\request\plugin\subplugin_provider {
+
+    /**
+     * Delete multiple users data within a single context.
+     *
+     * @param   approved_userlist   $userlist The approved context and user information to delete information for.
+     */
+    public static function delete_quizaccess_data_for_users(approved_userlist $userlist);
+}