Author: Zig Tan
MDL-61568 repository_skydrive: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=ec0dae6909d0822197d8e5b72472397627048de5
http://github.com/moodle/moodle/commit/ec0dae6909d0822197d8e5b72472397627048de5
+ 3.4 en [privacy:metadata,repository_skydrive]