Add a new QUIC platform API QUIC_SLOW_TEST which will be used in chrome
to disable tests which are too slow.
gfe-relnote: n/a - test only
PiperOrigin-RevId: 280683817
Change-Id: I932310747a3ae2ca430b26d9d56d0f44cb9ee589
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.