In QUIC, prevent applications from looking up stream_map_ directly.
Instead, a new method GetActiveStream() is exposed.
No behavior change. not protected.
PiperOrigin-RevId: 322685603
Change-Id: Id354bc418bd6634439e188e1247f40a3ce1727d3
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.