Needed to produce correct VideoLayersAllocation extension for scalability mode L1T2. The value in the `spatialLayers` array is used on this line: https://source.chromium.org/chromium/chromium/src/+/main:third_party/webrtc/video/video_stream_encoder.cc;drc=c374d11fac252535ccba15975568b1f6552c117e;l=320 Bug: webrtc:11607 Change-Id: I3bcfe738627e0af6f203a9b0f6e5323492e68987 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/267621 Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/main@{#37414}