It appears unused everywhere. It will be deleted in a followup cl. Bug: webrtc:6471 Change-Id: Ief992db6e52aee3cf1bc77ffd659ffbc072672ba Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/134212 Reviewed-by: Oskar Sundbom <ossu@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27787}