Update QuicFramer methods' names to match IETF draft specs.
Also removed unused peer methods.
gfe-relnote: no behavior change, not protected.
PiperOrigin-RevId: 301922564
Change-Id: Icbddc2a492538a836605679129af2d65100d3e4c
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.