This field is unused. It was deprecated in https://webrtc-review.googlesource.com/c/src/+/192542 Bug: None Change-Id: Iba264c03e16fc240893595075b525d44efa8ab96 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/314720 Reviewed-by: Åsa Persson <asapersson@webrtc.org> Auto-Submit: Danil Chapovalov <danilchap@webrtc.org> Commit-Queue: Åsa Persson <asapersson@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/main@{#40504}