Git commits in Moodle 3.9.2 by Justin Hunt

commit d46ee17722500428b9cb219648e1de44d77fe4b7
Author: Justin Hunt <poodllsupport@gmail.com>
Date:   Tue, 01 Oct 2019 14:40:04 +0800
Tag:    v3.9.2

MDL-66810 mod_lti: Reinstate deprecated default permissions on iframe