In quic, respect enable_half_rtt_tail_loss_probe_ when using pto. protected by gfe2_reloadable_flag_quic_use_half_rtt_as_first_pto.
PiperOrigin-RevId: 323792003
Change-Id: Ida875ae614e9849efa6c51fd355ac6504b8e9744
QUICHE (QUIC, Http/2, Etc) is Google‘s implementation of QUIC and related protocols. It powers Chromium as well as Google’s QUIC servers and some other projects.