This is a reland of 51e5c4b0f4
It may happen that user will pass config with min bitrate > max bitrate.
In such case we can't generate cached_constraints and will crash before.
The reland will handle this situation gracefully.
Original change's description:
> Fix data race for config_ in AudioSendStream
>
> config_ was written and read on different threads without sync. This CL
> moves config access on worker_thread_ with all other required fields.
> It keeps only bitrate allocator accessed from worker_queue_, because
> it is used from it in other classes and supposed to be single threaded.
>
> Bug: None
> Change-Id: I23ece4dc8b09b41a8c589412bedd36d63b76cbc5
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/203267
> Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
> Reviewed-by: Niels Moller <nisse@webrtc.org>
> Reviewed-by: Per Åhgren <peah@webrtc.org>
> Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> Commit-Queue: Artem Titov <titovartem@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#33125}
Bug: None
Change-Id: I274ff15208d69c25fb25a0f1dd0a0e37b72480b0
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/205523
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Per Åhgren <peah@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33162}
a208861401