Author: Mihail Geshoski
MDL-61948 core_media: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f143179a66dafc3a7ef95b3c68b55541c6aa2f48
http://github.com/moodle/moodle/commit/f143179a66dafc3a7ef95b3c68b55541c6aa2f48
+ 3.5 en [privacy:metadata,core_media]