This moves the PostUpdates function from SendSideCongestionController
to the ControlHandler class.
Bug: None
Change-Id: I4000484a1df9d5fae02573196153c24f4f940219
Reviewed-on: https://webrtc-review.googlesource.com/70223
Reviewed-by: Niels Moller <nisse@webrtc.org>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22987}