The transformer was previously moved into the config of the first stream
which resulted in incorrect behavior for simulcast. Use the transformer
in all the streams.
Bug: chromium:1065838
Change-Id: Iea340443da8cd4de32953bb24d3e6a07a275ae2a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/173026
Reviewed-by: Magnus Flodman <mflodman@webrtc.org>
Commit-Queue: Marina Ciocea <marinaciocea@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31018}