43bfe0b8a6
This change clarifies the semantics of this field: unset: Depends on context. == 0: Invalid. == 1: No temporal layering. >= 2: Temporal layering. We should try to remove the wrapping optional later. Bug: webrtc:11297 Change-Id: Id765f2dc1d31a4ba3cd424978ac6054cd60152ea Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/166528 Commit-Queue: Rasmus Brandt <brandtr@webrtc.org> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Cr-Commit-Position: refs/heads/master@{#30336}