net: support ALPN.

net/socket/ssl_client_socket_nss.cc

Index: net/socket/ssl_client_socket_nss.cc
diff --git a/net/socket/ssl_client_socket_nss.cc b/net/socket/ssl_client_socket_nss.cc
index bffadfa9c6e79a77256556ebb855f43056d2b021..f483b11533b6d921d146b7958d2c16b56686dc1b 100644
--- a/net/socket/ssl_client_socket_nss.cc
+++ b/net/socket/ssl_client_socket_nss.cc
@@ -2498,6 +2498,7 @@ void SSLClientSocketNSS::Core::UpdateNextProto() {
       std::string(reinterpret_cast<char*>(buf), buf_len);
   switch (state) {
     case SSL_NEXT_PROTO_NEGOTIATED:
+    case SSL_NEXT_PROTO_SELECTED:

[Ryan Sleevi, 2013/07/02 19:13:10]

This will affect the histograms for NPN, as well as enable things like false
start.

I think this is OK for the initial landing, since we really do want the rest of
the codepaths to be the same for ALPN vs NPN, but it may be good to do a
follow-up CL to make sure we're not mis-reporting anything.

       nss_handshake_state_.next_proto_status = kNextProtoNegotiated;
       break;
     case SSL_NEXT_PROTO_NO_OVERLAP: