The stereo-ness depends on the input Capturer and Renderer:
1) The stereo-ness of playout equals to Renderer;
2) The stereo-ness of recording equals to Capturer.
Bug: webrtc:8978
Change-Id: Ib41b8294c30ef6db54fdaf9d1890de0135a976d1
Reviewed-on: https://webrtc-review.googlesource.com/60100
Commit-Queue: Pengyu Liao <pengyul@google.com>
Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org>
Reviewed-by: Henrik Andreassson <henrika@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22374}
ba907f0058