tree 80a64a85d1ffd58016d8f2be51d51bc7e5c73db4
parent c2fd610bd20101eeb35a1e495e3fed0ac256b0b9
author wub <wub@google.com> 1583200523 -0800
committer Copybara-Service <copybara-worker@google.com> 1583200557 -0800

gfe-relnote: (n/a) In QUIC BBRv2, avoid unnecessary PROBE_RTTs when coming out of quiescence. Protected by --gfe2_reloadable_flag_quic_bbr2_avoid_unnecessary_probe_rtt.

This changes BBRv2 behavior in 2 places:
1. If BBRv2 is in PROBE_RTT out of quiescence, immediately transition to PROBE_BW. This allows the first round after quiescence to send more data.
2. If BBRv2 is in PROBE_BW out of quiescence, postpone the time for the next PROBE_RTT by the duration of the quiescence.

PiperOrigin-RevId: 298492623
Change-Id: I13aa0db84da70b6dd84b3478309c4dd559cf531c