tree 6f62560496b7e3eeeb03893478dfd6206f2ea466
parent d672c6d22defb8d50006c5f19c2f4db16b74d51a
author bnc <bnc@google.com> 1574905838 -0800
committer Copybara-Service <copybara-worker@google.com> 1574905874 -0800

Send Stream Cancellation QPACK instruction.

According to
https://quicwg.org/base-drafts/draft-ietf-quic-qpack.html#name-abandonment-of-a-stream,
this should be done when a stream reset is received before the end of a stream
or before all header blocks are processed on that stream, or when reading of a
stream is abandoned.

gfe-relnote: n/a, change to QUIC v99-only code.  Protected by existing disabled gfe2_reloadable_flag_quic_enable_version_99.
PiperOrigin-RevId: 282861038
Change-Id: Ibf6f69e29f98022e0eebf89676783fa3ce26541a