Break out the basic reliable QUIC stream functionality from the

net/tools/quic/quic_spdy_client_stream.h

Index: net/tools/quic/quic_spdy_client_stream.h
diff --git a/net/tools/quic/quic_spdy_client_stream.h b/net/tools/quic/quic_spdy_client_stream.h
index 638a9de1e2fc22b8737de8a028a67bf23d4b3423..984f64ba7de73a52819c3b73f89e5a37dd1e22f5 100644
--- a/net/tools/quic/quic_spdy_client_stream.h
+++ b/net/tools/quic/quic_spdy_client_stream.h
@@ -10,8 +10,8 @@
 
 #include "base/strings/string_piece.h"
 #include "net/base/io_buffer.h"
+#include "net/quic/quic_data_stream.h"
 #include "net/quic/quic_protocol.h"
-#include "net/quic/reliable_quic_stream.h"
 #include "net/tools/balsa/balsa_frame.h"
 #include "net/tools/balsa/balsa_headers.h"
 
@@ -23,7 +23,7 @@ class QuicClientSession;
 
 // All this does right now is send an SPDY request, and aggregate the
 // SPDY response.
-class QuicSpdyClientStream : public ReliableQuicStream {
+class QuicSpdyClientStream : public QuicDataStream {
  public:
   QuicSpdyClientStream(QuicStreamId id, QuicClientSession* session);
   virtual ~QuicSpdyClientStream();
@@ -56,7 +56,7 @@ class QuicSpdyClientStream : public ReliableQuicStream {
 
   // While the server's set_priority shouldn't be called externally, the creator
   // of client-side streams should be able to set the priority.
-  using ReliableQuicStream::set_priority;
+  using QuicDataStream::set_priority;
 
  private:
   int ParseResponseHeaders();