Enable UI component in Exo Player lib

Bug: 204975779
Test: Build
Change-Id: Ibbb8467bdab561eba257046ae5a6b24b885defd0
Merged-In: Ibbb8467bdab561eba257046ae5a6b24b885defd0
(cherry picked from commit 1cd67d48826bc97d7b65430713971f3edb8de23f)
1 file changed