Add QuicStream and friends to QUIC code.

net/quic/quic_crypto_stream.h

Index: net/quic/quic_crypto_stream.h
diff --git a/net/quic/quic_crypto_stream.h b/net/quic/quic_crypto_stream.h
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+// 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.
+
+#ifndef NET_QUIC_QUIC_CRYPTO_STREAM_H_
+#define NET_QUIC_QUIC_CRYPTO_STREAM_H_
+
+#include "net/quic/crypto/crypto_framer.h"
+#include "net/quic/reliable_quic_stream.h"
+
+namespace net {
+
+class QuicSession;
+
+// Crypto handshake messages in QUIC take place over a reserved
+// reliable stream with the id 1.  Each endpoint (client and server)
+// will allocate an instance of a subclass of QuicCryptoStream
+// to send and receive handshake messages.  (In the normal 1-RTT
+// handshake, the client will send a client hello, CHLO, message.
+// The server will receive this message and respond with a server
+// hello message, SHLO.  At this point both sides will have established
+// a crypto context they can use to send encrypted messages.
+//
+// For more details: http://goto.google.com/quic-crypto
+class NET_EXPORT_PRIVATE QuicCryptoStream
+    : public ReliableQuicStream,
+      public CryptoFramerVisitorInterface {
+
+ public:
+  explicit QuicCryptoStream(QuicSession* session);
+
+  // CryptoFramerVisitorInterface implementation
+  virtual void OnError(CryptoFramer* framer) OVERRIDE;
+  virtual void OnHandshakeMessage(const CryptoHandshakeMessage& message) = 0;
+
+  // ReliableQuicStream implementation
+  virtual uint32 ProcessData(const char* data, uint32 data_len) OVERRIDE;
+
+  // Sends |message| to the peer.
+  void SendHandshakeMessage(const CryptoHandshakeMessage& message);
+
+  bool handshake_complete() { return handshake_complete_; }
+
+ protected:
+  // Closes the connection
+  void CloseConnection(QuicErrorCode error);
+
+  void set_handshake_complete(bool complete) {
+    handshake_complete_ = complete;
+  }
+
+ private:
+  CryptoFramer crypto_framer_;
+  bool handshake_complete_;
+};
+
+}  // namespace net
+
+#endif  // NET_QUIC_QUIC_CRYPTO_STREAM_H_