Add a new GetNegotiatedProtocol method to StreamSocket and implement in all subclasses.

net/curvecp/curvecp_client_socket.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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.
 
 #include "net/base/ip_endpoint.h"
 #include "net/base/net_errors.h"
 #include "net/base/sys_addrinfo.h"
 #include "net/curvecp/curvecp_client_socket.h"
 #include "net/curvecp/messenger.h"
 
 namespace net {
@@ skipping 77 matching lines @@
 }
 
 int64 CurveCPClientSocket::NumBytesRead() const {
   return -1;
 }
 
 base::TimeDelta CurveCPClientSocket::GetConnectTimeMicros() const {
   return base::TimeDelta::FromMicroseconds(-1);
 }
 
+NextProto CurveCPClientSocket::GetNegotiatedProtocol() const {
+  return kProtoUnknown;
+}
+
 int CurveCPClientSocket::Read(IOBuffer* buf,
                               int buf_len,
                               const CompletionCallback& callback) {
   return messenger_.Read(buf, buf_len, callback);
 }
 
 int CurveCPClientSocket::Write(IOBuffer* buf,
                                int buf_len,
                                const CompletionCallback& callback) {
   return messenger_.Write(buf, buf_len, callback);
 }
 
 bool CurveCPClientSocket::SetReceiveBufferSize(int32 size) {
   return true;
 }
 
 bool CurveCPClientSocket::SetSendBufferSize(int32 size) {
   return true;
 }
 
 }  // namespace net