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

remoting/jingle_glue/ssl_socket_adapter.h

Index: remoting/jingle_glue/ssl_socket_adapter.h
diff --git a/remoting/jingle_glue/ssl_socket_adapter.h b/remoting/jingle_glue/ssl_socket_adapter.h
index ea8cff15b1ff8bbf794e0fefcb8f2b91f4694160..24b0e051c2a6683965aa8dfcbdc3c8355a170e39 100644
--- a/remoting/jingle_glue/ssl_socket_adapter.h
+++ b/remoting/jingle_glue/ssl_socket_adapter.h
@@ -1,4 +1,4 @@
-// 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.
 
@@ -53,6 +53,7 @@ class TransportSocket : public net::StreamSocket, public sigslot::has_slots<> {
   virtual bool UsingTCPFastOpen() const OVERRIDE;
   virtual int64 NumBytesRead() const OVERRIDE;
   virtual base::TimeDelta GetConnectTimeMicros() const OVERRIDE;
+  virtual net::NextProto GetNegotiatedProtocol() const OVERRIDE;
 
   // net::Socket implementation.
   virtual int Read(net::IOBuffer* buf, int buf_len,