tree 12df7c3dd556900d06c5d127173f340f4b629d8c
parent 51e896265a0a43f43d5000eab069a2961ac7ebf4
author bnc <bnc@google.com> 1578683598 -0800
committer Copybara-Service <copybara-worker@google.com> 1578683636 -0800

Write PRIORITY_UPDATE frame.

gfe-relnote: n/a, change to QUIC v99-only code.  Protected by existing disabled gfe2_reloadable_flag_quic_enable_version_99.
PiperOrigin-RevId: 289127305
Change-Id: Ic515e3159362430055178010ee1c45e1a8e2c604