Add a quic::CryptoBuffers class to own a std::vector<CRYPTO_BUFFER*> and the buffers the elements point to. Use it in TlsServerHandshaker.
PiperOrigin-RevId: 333578828
Change-Id: I51e976d776691f583c8d3cbc2c0b64952b1c407a
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.