Non-paced audio should be sent "immediately", but in several places that
was determined by looking at the current time - which can lead to
inconsistencies.
E.g. if a packet is enqueued and ProcessPackets() is called 1ms later,
the pacer should see NextSendTime() as 1ms ago, so that buffer levels
are cleared at the right pace.
Bug: webrtc:10809
Change-Id: I04a169f3df3e28a5c8ef7fa8a042b9c482c307ce
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/172845
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31002}
b571ff48f8