Remove dependency on headers stream from QuicSession.

net/quic/quic_client_session_base.h

Index: net/quic/quic_client_session_base.h
diff --git a/net/quic/quic_client_session_base.h b/net/quic/quic_client_session_base.h
index d72996c41181a82de6fdf87dfc0d60bd3520bd6f..0e3c0fa3ff32cdf031ec2d54dd66d498062476ea 100644
--- a/net/quic/quic_client_session_base.h
+++ b/net/quic/quic_client_session_base.h
@@ -6,12 +6,12 @@
 #define NET_QUIC_QUIC_CLIENT_SESSION_BASE_H_
 
 #include "net/quic/quic_crypto_client_stream.h"
-#include "net/quic/quic_session.h"
+#include "net/quic/quic_spdy_session.h"
 
 namespace net {
 
 // Base class for all client-specific QuicSession subclasses.
-class NET_EXPORT_PRIVATE QuicClientSessionBase : public QuicSession {
+class NET_EXPORT_PRIVATE QuicClientSessionBase : public QuicSpdySession {
  public:
   QuicClientSessionBase(QuicConnection* connection,
                         const QuicConfig& config);