Injecting the retransmission rate limiter used in video send stream
directly rather than using the transport controller reference.
This prepares for removing ownership of the retransmission rate limiter
from the congestion controller.
Bug: webrtc:8415
Change-Id: Iee8af53e62f407ee430625008f2d2b0cabb1f369
Reviewed-on: https://webrtc-review.googlesource.com/58800
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22251}
25e5110ab0