Network controller is an implementation of the
NetworkControllerInterface which is a part of congestion controller API.
Bitrate controller computes rate update each iteration (see
https://www.usenix.org/system/files/conference/nsdi18/nsdi18-dong.pdf).
Bug: webrtc:9434
Change-Id: I48d3d9e1c713985ef9ebe28dc1f1285757588c69
Reviewed-on: https://webrtc-review.googlesource.com/87222
Commit-Queue: Anastasia Koloskova <koloskova@webrtc.org>
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24376}
