This will help to reduce redundant ScalabilityMode to temporal layer
count mapping in blink.
Bug: chromium:40763991
Change-Id: Ida3e6abb91383e27465eb1b697ad9431935cf9ff
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/362486
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Jianlin Qiu <jianlin.qiu@intel.com>
Cr-Commit-Position: refs/heads/main@{#43031}
295758848c