Developer credits
Git commits in Moodle 3.10.0 by Justin Hunt
commit f9f0f1cc2623c043797a0e7e77f2687faf59f245 Author: Justin Hunt <poodllsupport@gmail.com> Date: Tue, 01 Oct 2019 14:40:04 +0800 Tag: v3.10.0-beta MDL-66810 mod_lti: Reinstate deprecated default permissions on iframe