Make HttpEncoder methods static.
This class stores no state, no need to ever instantiate it.
gfe-relnote: n/a, no functional change.
PiperOrigin-RevId: 277333157
Change-Id: I9ea319aa186b975325a70a321a50259eaec47093
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.