Especially with the TaskQueuePacerSender, it is very common that a
single packet is added to the queue and then immediately removed as
it gets sent to the network.
This CL adds a fast-path for that case, that avoid creating book-
keeping in the form of stream-priorities and timestamp sets etc.
Functionally, it should be a noop, but hopefully it can save a few
CPU cycles.
Bug: webrtc:10809
Change-Id: Idaa06b4f8d1da444fce78cc742e2ab52f9efe815
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/172090
Commit-Queue: Erik Språng <sprang@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31001}
2e3e36312b