This CL only does the rename from"stereo" to multiplex". With this we have a better name that doesn't clash with audio's usage of stereo. Bug: webrtc:7671 Change-Id: Iebc3fc20839025f1bc8bcf0e16141bf9744ef652 Reviewed-on: https://webrtc-review.googlesource.com/43242 Commit-Queue: Emircan Uysaler <emircan@webrtc.org> Reviewed-by: Niklas Enbom <niklas.enbom@webrtc.org> Cr-Commit-Position: refs/heads/master@{#21769}