Add code path to store application states in TlsClientHandshaker.
gfe-relnote: unused code. not protected.
PiperOrigin-RevId: 306324193
Change-Id: I1aaefba94f765247c3da8d7a050c70705861faf5
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.