This allows the voice send channels to share the method definition. Bug: webrtc:15214 Change-Id: Ie0cc23f3694eeb8322a9ea7328a8d56fa7571c95 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/309600 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Florent Castelli <orphis@webrtc.org> Cr-Commit-Position: refs/heads/main@{#40322}