Include encoder stream bytes in written header size.

Include the total size of dynamic table insertion instructions (including
duplications) sent on the encoder stream triggered by encoding a header list in
the return value of QuicSpdyStream::WriteHeadersImpl().

gfe-relnote: n/a, change to QUIC v99-only code.  Protected by existing disabled gfe2_reloadable_flag_quic_enable_version_99.
PiperOrigin-RevId: 268203243
Change-Id: I5aacf67592862747670192a598c0aa877cb0c658
diff --git a/quic/core/qpack/qpack_round_trip_test.cc b/quic/core/qpack/qpack_round_trip_test.cc
index 9441b82..beff68e 100644
--- a/quic/core/qpack/qpack_round_trip_test.cc
+++ b/quic/core/qpack/qpack_round_trip_test.cc
@@ -32,7 +32,7 @@
     QpackEncoder encoder(&decoder_stream_error_delegate);
     encoder.set_qpack_stream_sender_delegate(&encoder_stream_sender_delegate);
     std::string encoded_header_block =
-        encoder.EncodeHeaderList(/* stream_id = */ 1, header_list);
+        encoder.EncodeHeaderList(/* stream_id = */ 1, header_list, nullptr);
 
     TestHeadersHandler handler;
     NoopEncoderStreamErrorDelegate encoder_stream_error_delegate;