They are unused. Bug: webrtc:8566 Change-Id: Iabc8b30c99f2fddc036f08dc70441db494cc5118 Reviewed-on: https://webrtc-review.googlesource.com/25180 Reviewed-by: Patrik Höglund <phoglund@webrtc.org> Commit-Queue: Edward Lemur <ehmaldonado@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20838}