MDL-61663 portfolio_download: add privacy provider implementation

portfolio/download/classes/privacy/provider.php

@@ -0,0 +1,48 @@
+<?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/>.
+
+/**
+ * Privacy class for requesting user data.
+ *
+ * @package    portfolio_download
+ * @copyright  2018 Jake Dallimore <jrhdallimore@gmail.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace portfolio_download\privacy;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Provider for the portfolio_download plugin.
+ *
+ * @copyright  2018 Jake Dallimore <jrhdallimore@gmail.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements
+    // This portfolio plugin does not store any data itself.
+    // It has no database tables, and it purely acts as a conduit, sending data externally.
+    \core_privacy\local\metadata\null_provider {
+
+    /**
+     * Get the language string identifier with the component's language
+     * file to explain why this plugin stores no data.
+     *
+     * @return  string
+     */
+    public static function get_reason() : string {
+        return 'privacy:metadata';
+    }
+}

portfolio/download/lang/en/portfolio_download.php

@@ -26,3 +26,4 @@
 $string['downloadfile'] = 'Download your portfolio export file';
 $string['downloading'] = 'Downloading ...';
 $string['pluginname'] = 'File download';
+$string['privacy:metadata'] = 'This plugin does not store personal data, nor does it export personal data to an external location.';