Remove dependency on headers stream from QuicSession.

net/quic/quic_client_session_base.cc

Index: net/quic/quic_client_session_base.cc
diff --git a/net/quic/quic_client_session_base.cc b/net/quic/quic_client_session_base.cc
index 40d4b86dc2cb46e439152a60a0958a0806b41038..12173e51019874b7a81e492a5041c88bbdee0b84 100644
--- a/net/quic/quic_client_session_base.cc
+++ b/net/quic/quic_client_session_base.cc
@@ -8,10 +8,10 @@
 
 namespace net {
 
-QuicClientSessionBase::QuicClientSessionBase(
-    QuicConnection* connection,
-    const QuicConfig& config)
-    : QuicSession(connection, config) {}
+QuicClientSessionBase::QuicClientSessionBase(QuicConnection* connection,
+                                             const QuicConfig& config)
+    : QuicSpdySession(connection, config) {
+}
 
 QuicClientSessionBase::~QuicClientSessionBase() {}
 
@@ -27,7 +27,7 @@ void QuicClientSessionBase::OnCryptoHandshakeEvent(CryptoHandshakeEvent event) {
   }
   // kFHDR config maps to FEC protection always for headers stream.
   // TODO(jri): Add crypto stream in addition to headers for kHDR.
-  headers_stream_->set_fec_policy(FEC_PROTECT_ALWAYS);
+  headers_stream()->set_fec_policy(FEC_PROTECT_ALWAYS);
 }
 
 }  // namespace net