Replacing .yt extension MIME type mapping from application/vnd.youtube.yt to video/vnd.youtube.yt, but keep old mapping around for inferring extension only.

Test: CtsLibcoreTestCases
Bug: 70851634
Fixes: 70851634

Change-Id: I613ce054b771883373d9b4d0576af80d003e2bce
2 files changed