DO NOT MERGE Avoid size_t overflow in base64 decoding once again
Switch to foundation base64 function in OggExtractor and fix the
issue there.
This reverts commit 28314aef.
Bug: 23707088
Change-Id: I268bd50431de5b5e579343bf1b425c42ada6daba
(cherry picked from commit 820c105f)
Ticket: CYNGNOS-1189