Add a QuicHttpStream class.

net/quic/reliable_quic_stream.h

 // 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.
 //
 // The base class for client/server reliable streams.
 
 #ifndef NET_QUIC_RELIABLE_QUIC_STREAM_H_
 #define NET_QUIC_RELIABLE_QUIC_STREAM_H_
 
 #include "net/quic/quic_stream_sequencer.h"
@@ skipping 45 matching lines @@
   bool write_side_closed() const { return write_side_closed_; }
 
  protected:
   virtual int WriteData(base::StringPiece data, bool fin);
   // Close the read side of the socket.  Further frames will not be accepted.
   virtual void CloseReadSide();
   // Close the write side of the socket.  Further writes will fail.
   void CloseWriteSide();
 
   QuicSession* session() { return session_; }
+  const QuicSession* session() const { return session_; }
 
  private:
   friend class ReliableQuicStreamPeer;
 
   QuicStreamSequencer sequencer_;
   QuicStreamId id_;
   QuicStreamOffset offset_;
   QuicSession* session_;
   QuicErrorCode error_;
   // True if the read side is closed and further frames should be rejected.
   bool read_side_closed_;
   // True if the write side is closed, and further writes should fail.
   bool write_side_closed_;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_RELIABLE_QUIC_STREAM_H_