Remove dependency on headers stream from QuicSession.

net/quic/test_tools/quic_session_peer.h

Index: net/quic/test_tools/quic_session_peer.h
diff --git a/net/quic/test_tools/quic_session_peer.h b/net/quic/test_tools/quic_session_peer.h
index a57cab5482f84eb08759a65e540421f4d128bb75..9e06411f61dfe5c5176a6f071a466c07cb99818e 100644
--- a/net/quic/test_tools/quic_session_peer.h
+++ b/net/quic/test_tools/quic_session_peer.h
@@ -16,6 +16,7 @@ class QuicCryptoStream;
 class QuicDataStream;
 class QuicHeadersStream;
 class QuicSession;
+class ReliableQuicStream;
 
 namespace test {
 
@@ -24,12 +25,9 @@ class QuicSessionPeer {
   static void SetNextStreamId(QuicSession* session, QuicStreamId id);
   static void SetMaxOpenStreams(QuicSession* session, uint32 max_streams);
   static QuicCryptoStream* GetCryptoStream(QuicSession* session);
-  static QuicHeadersStream* GetHeadersStream(QuicSession* session);
-  static void SetHeadersStream(QuicSession* session,
-                               QuicHeadersStream* headers_stream);
   static QuicWriteBlockedList* GetWriteBlockedStreams(QuicSession* session);
-  static QuicDataStream* GetIncomingDataStream(QuicSession* session,
-                                               QuicStreamId stream_id);
+  static ReliableQuicStream* GetIncomingDynamicStream(QuicSession* session,
+                                                      QuicStreamId stream_id);
   static std::map<QuicStreamId, QuicStreamOffset>&
   GetLocallyClosedStreamsHighestOffset(QuicSession* session);