Add a QuicHttpStream class.

net/quic/quic_session.h

Index: net/quic/quic_session.h
diff --git a/net/quic/quic_session.h b/net/quic/quic_session.h
index a55e096fd102c74818848571a4cb8daea1fbac7c..9b6b031a4dece9c655b9ea357256c571779bf54e 100644
--- a/net/quic/quic_session.h
+++ b/net/quic/quic_session.h
@@ -51,7 +51,12 @@ class NET_EXPORT_PRIVATE QuicSession : public QuicConnectionVisitorInterface {
   virtual void CloseStream(QuicStreamId stream_id);
 
   // Returns true once the crypto handshake is complete.
-  virtual bool IsHandshakeComplete();
+  virtual bool IsCryptoHandshakeComplete();
+
+  // Called by the QuicCryptoStream when the handshake completes.
+  // If |error| is QUIC_NO_ERROR then the handshake was succesful,
+  // otherwise it failed.
+  virtual void OnCryptoHandshakeComplete(QuicErrorCode error);
 
   // Returns true if the stream existed previously and has been closed.
   // Returns false if the stream is still active or if the stream has
@@ -59,6 +64,7 @@ class NET_EXPORT_PRIVATE QuicSession : public QuicConnectionVisitorInterface {
   bool IsClosedStream(QuicStreamId id);
 
   QuicConnection* connection() { return connection_.get(); }
+  const QuicConnection* connection() const { return connection_.get(); }
   size_t num_active_requests() const { return stream_map_.size(); }
   const IPEndPoint& peer_address() const {
     return connection_->peer_address();