Rename QuicDataStream to QuicSpdyStream. No behavior change.

net/quic/quic_chromium_client_session.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.
 //
 // A client specific QuicSession subclass.  This class owns the underlying
 // QuicConnection and QuicConnectionHelper objects.  The connection stores
 // a non-owning pointer to the helper so this session needs to ensure that
 // the helper outlives the connection.
 
 #ifndef NET_QUIC_QUIC_CHROMIUM_CLIENT_SESSION_H_
@@ skipping 201 matching lines @@
   // is a secure QUIC session, then |hostname| must match the certificate
   // presented during the handshake.
   bool CanPool(const std::string& hostname, PrivacyMode privacy_mode) const;
 
   const QuicServerId& server_id() const { return server_id_; }
 
   QuicDisabledReason disabled_reason() const { return disabled_reason_; }
 
  protected:
   // QuicSession methods:
-  QuicDataStream* CreateIncomingDynamicStream(QuicStreamId id) override;
+  QuicSpdyStream* CreateIncomingDynamicStream(QuicStreamId id) override;
 
  private:
   friend class test::QuicChromiumClientSessionPeer;
 
   typedef std::set<Observer*> ObserverSet;
   typedef std::list<StreamRequest*> StreamRequestQueue;
 
   QuicReliableClientStream* CreateOutgoingReliableStreamImpl();
   // A completion callback invoked when a read completes.
   void OnReadComplete(int result);
@@ skipping 53 matching lines @@
   bool going_away_;
   QuicDisabledReason disabled_reason_;
   base::WeakPtrFactory<QuicChromiumClientSession> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicChromiumClientSession);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CHROMIUM_CLIENT_SESSION_H_