Author: Frédéric Massart
MDL-61984 mod_chat: Implement privacy API
http://git.moodle.org/gw?p=moodle.git;a=commit;h=bf3b4f3e86d3929b4853adea2c56cd188bf8983a
http://github.com/moodle/moodle/commit/bf3b4f3e86d3929b4853adea2c56cd188bf8983a
+ 3.5 en [privacy:metadata:messages,mod_chat]
+ 3.5 en [privacy:metadata:messages:issystem,mod_chat]
+ 3.5 en [privacy:metadata:messages:message,mod_chat]
+ 3.5 en [privacy:metadata:messages:timestamp,mod_chat]
+ 3.5 en [privacy:metadata:messages:userid,mod_chat]