Log server advertised protos and the selected

net/socket/ssl_client_socket_nss.cc

Index: net/socket/ssl_client_socket_nss.cc
===================================================================
--- net/socket/ssl_client_socket_nss.cc	(revision 112817)
+++ net/socket/ssl_client_socket_nss.cc	(working copy)
@@ -556,8 +556,10 @@
 }
 
 SSLClientSocket::NextProtoStatus
-SSLClientSocketNSS::GetNextProto(std::string* proto) {
+SSLClientSocketNSS::GetNextProto(std::string* proto,
+                                 std::string* server_protos) {
   *proto = next_proto_;
+  *server_protos = server_protos_;
   return next_proto_status_;
 }
 
@@ -2598,6 +2600,9 @@
     i += len + 1;
   }
 
+  that->server_protos_.assign(
+      reinterpret_cast<const char*>(protos), protos_len);
+
   // If we didn't find a protocol, we select the first one from our list.
   if (that->next_proto_status_ != kNextProtoNegotiated) {
     that->next_proto_status_ = kNextProtoNoOverlap;