Deletes dead code.

net/quic/core/quic_client_session_base.h

Index: net/quic/core/quic_client_session_base.h
diff --git a/net/quic/core/quic_client_session_base.h b/net/quic/core/quic_client_session_base.h
index f73081f72aa54fb644d26c6639343b6bda89bf47..aedc7c03629246b491e6ef9797184e53fd40df9c 100644
--- a/net/quic/core/quic_client_session_base.h
+++ b/net/quic/core/quic_client_session_base.h
@@ -50,17 +50,6 @@ class NET_EXPORT_PRIVATE QuicClientSessionBase
   void OnCryptoHandshakeEvent(CryptoHandshakeEvent event) override;
 
   // Called by |headers_stream_| when push promise headers have been
-  // received for a stream.
-  void OnPromiseHeaders(QuicStreamId stream_id,
-                        base::StringPiece headers_data) override;
-
-  // Called by |headers_stream_| when push promise headers have been
-  // completely received.
-  void OnPromiseHeadersComplete(QuicStreamId stream_id,
-                                QuicStreamId promised_stream_id,
-                                size_t frame_len) override;
-
-  // Called by |headers_stream_| when push promise headers have been
   // completely received.
   void OnPromiseHeaderList(QuicStreamId stream_id,
                            QuicStreamId promised_stream_id,