Report QUIC_BUG if application tries to write data before encryption is established.
gfe-relnote: no behavior change in production. not protected.
PiperOrigin-RevId: 300639905
Change-Id: I0d6a6c6a73f95ded04da01a8ec8a0920f877399a
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.