This CL removes the old non-paced code path and instead uses a helper class to just immediately pass the packet through the same code path as when an actual pacer is used. Bug: webrtc:10633 Change-Id: Id9a3ee4719829ad07710f5468e5452aa4bc8570b Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/150530 Commit-Queue: Erik Språng <sprang@webrtc.org> Reviewed-by: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28963}