This reverts commit 848ea9f0d3678118cb8926a2898454e5a4df58ae.
Reason for revert: Part of changes that may cause deadlock
Original change's description:
> Lets PacingController call PacketRouter directly.
>
> Since locking model has been cleaned up, PacingController can now call
> PacketRouter directly - without having to go via PacedSender or
> TaskQueuePacedSender.
>
> Bug: webrtc:10809
> Change-Id: I181f04167d677c35395286f8b246aefb4c3e7ec7
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/175909
> Reviewed-by: Sebastian Jansson <srte@webrtc.org>
> Commit-Queue: Erik Språng <sprang@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#31342}
TBR=sprang@webrtc.org,srte@webrtc.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: webrtc:10809
Change-Id: I1d7d5217a03a51555b130ec5c2dd6a992b6e489e
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/178021
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Commit-Queue: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31563}
980cadd02c