Use quiche string libraries in third_party/quic/core/frames
gfe-relnote: n/a, no functional change
PiperOrigin-RevId: 285010062
Change-Id: I1c4fbc13ebd126223a67867f54309e1e086b4c3a
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.