tree 6366892dc76fc894110fc28fd273ded17e8ce1f4
parent e6fd1cf8d62270478827895c56f5427844e19f15
author wub <wub@google.com> 1605900894 -0800
committer Copybara-Service <copybara-worker@google.com> 1605900953 -0800

In TlsServerHandshaker, switch from BoringSSL's tlsext_servername_callback to select_cert_cb for cert selection.

This paves the way to go/split-handshake-v2.

Protected by FLAGS_quic_reloadable_flag_quic_tls_use_early_select_cert.

PiperOrigin-RevId: 343531889
Change-Id: Ib0c677c18f50526fc86ed45b532f460cdedcd119