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

net/socket/stream_socket.h

Index: net/socket/stream_socket.h
diff --git a/net/socket/stream_socket.h b/net/socket/stream_socket.h
index ef89906df4a3d91e543100334693144b4ee7aabd..e7ea2bee56911104852162c9a83dc846327a0759 100644
--- a/net/socket/stream_socket.h
+++ b/net/socket/stream_socket.h
@@ -87,6 +87,9 @@ class NET_EXPORT_PRIVATE StreamSocket : public Socket {
   // Returns the connection setup time of this socket.
   virtual base::TimeDelta GetConnectTimeMicros() const = 0;
 
+  // Returns the protocol negotiated for this socket.

[wtc, 2012/03/30 21:19:14]

Please mention the use of NPN in this comment.

Please document what the return value is if NPN is not
applicable.

[Ryan Hamilton, 2012/03/30 21:53:17]

Done.

+  virtual NextProto GetNegotiatedProtocol() const = 0;
+
  protected:
   // The following class is only used to gather statistics about the history of
   // a socket.  It is only instantiated and used in basic sockets, such as