Break out the basic reliable QUIC stream functionality from the

net/tools/quic/quic_spdy_client_stream.cc

Index: net/tools/quic/quic_spdy_client_stream.cc
diff --git a/net/tools/quic/quic_spdy_client_stream.cc b/net/tools/quic/quic_spdy_client_stream.cc
index 1a0b3f07f75175fce649b9a68b8c20d5dc354c97..2133e4688e1710b7499f9aad1379bb10a70dfdc7 100644
--- a/net/tools/quic/quic_spdy_client_stream.cc
+++ b/net/tools/quic/quic_spdy_client_stream.cc
@@ -18,7 +18,7 @@ static const size_t kHeaderBufInitialSize = 4096;
 
 QuicSpdyClientStream::QuicSpdyClientStream(QuicStreamId id,
                                            QuicClientSession* session)
-    : ReliableQuicStream(id, session),
+    : QuicDataStream(id, session),
       read_buf_(new GrowableIOBuffer()),
       response_headers_received_(false) {
 }
@@ -32,7 +32,7 @@ bool QuicSpdyClientStream::OnStreamFrame(const QuicStreamFrame& frame) {
                << "Aborting request.";
     CloseWriteSide();
   }
-  return ReliableQuicStream::OnStreamFrame(frame);
+  return QuicDataStream::OnStreamFrame(frame);
 }
 
 uint32 QuicSpdyClientStream::ProcessData(const char* data, uint32 length) {