Danil Chapovalov 6c78ff486a Always verify packet wasn't resend recently before resending it.
Pacer may accept same packet serveral time for resending,
packet may spend non-zero time in pacer queue.
As a result packet can be resend several time within one rtt
wasting bandwidth.

Bug: None
Change-Id: I753a5400b47d3804735e66e539a1b103916d0c94
Reviewed-on: https://webrtc-review.googlesource.com/c/106260
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25205}
2018-10-16 11:26:10 +00:00
..
2018-07-25 14:59:26 +00:00
2018-06-19 14:00:39 +00:00
2018-09-07 22:01:46 +00:00