This is to make it clear that this field indicate whether the upper bits
of the sequence number should be communicated. However, the current
implementation only sets the field if it is a key frame.
Bug: webrtc:358039777
Change-Id: Ic2c8b6d91499e4e5cf25b8ce9591d326d7044fb0
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/361402
Commit-Queue: Fanny Linderborg <linderborg@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#42924}
6e072e6bfb