Florent Castelli ee97e6ad88 Move GetSendCodec() to MediaSendChannelInterface
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}
2023-06-21 10:00:56 +00:00
..