net: rework the NPN patch.

net/socket/ssl_client_socket_nss.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_SOCKET_SSL_CLIENT_SOCKET_NSS_H_
 #define NET_SOCKET_SSL_CLIENT_SOCKET_NSS_H_
 #pragma once
 
 #include <certt.h>
 #include <keyt.h>
@@ skipping 170 matching lines @@
   static SECStatus ClientAuthHandler(void* arg,
                                      PRFileDesc* socket,
                                      CERTDistNames* ca_names,
                                      CERTCertificate** result_certificate,
                                      SECKEYPrivateKey** result_private_key);
 #endif
   // NSS calls this when handshake is completed.  We pass 'this' as the second
   // argument.
   static void HandshakeCallback(PRFileDesc* socket, void* arg);
 
+  static SECStatus NextProtoCallback(void* arg,
+                                     PRFileDesc* fd,
+                                     const unsigned char* protos,
+                                     unsigned int protos_len,
+                                     unsigned char* proto_out,
+                                     unsigned int* proto_out_len);
+
   // The following methods are for debugging bug 65948. Will remove this code
   // after fixing bug 65948.
   void EnsureThreadIdAssigned() const;
   bool CalledOnValidThread() const;
 
   OldCompletionCallbackImpl<SSLClientSocketNSS> buffer_send_callback_;
   OldCompletionCallbackImpl<SSLClientSocketNSS> buffer_recv_callback_;
   bool transport_send_busy_;
   bool transport_recv_busy_;
   // corked_ is true if we are currently suspending writes to the network. This
@@ skipping 77 matching lines @@
   // Buffers for the network end of the SSL state machine
   memio_Private* nss_bufs_;
 
   BoundNetLog net_log_;
 
   base::TimeTicks start_cert_verification_time_;
 
   scoped_ptr<SSLHostInfo> ssl_host_info_;
   DnsCertProvenanceChecker* const dns_cert_checker_;
 
+  // next_proto_ is the protocol that we selected by NPN.
+  std::string next_proto_;
+  NextProtoStatus next_proto_status_;
+
   // The following two variables are added for debugging bug 65948. Will
   // remove this code after fixing bug 65948.
   // Added the following code Debugging in release mode.
   mutable base::Lock lock_;
   // This is mutable so that CalledOnValidThread can set it.
   // It's guarded by |lock_|.
   mutable base::PlatformThreadId valid_thread_id_;
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_SSL_CLIENT_SOCKET_NSS_H_