Add api tracking files for MediaProvider

Also remove the annotations from the droidstub srcs, they're
not necessary and would actually show up in the API tracking
files if left where they were.

Bug: 147768409
Test: m
Change-Id: Ia81ea0e43575dceb0738f49b48be0a78487fd9d2
Merged-In: Ia81ea0e43575dceb0738f49b48be0a78487fd9d2
7 files changed