Make QpackDecoderStreamSender buffer serialized instructions.
QpackEncoderStreamSender has already been modified the same way at cr/273553497.
This way Header Acknowledgement and Insert Count Increment emitted from a single
QpackDecoder::OnDecodingCompleted() call can be coalesced into a single write
without any copying.
gfe-relnote: n/a, change to QUIC v99-only code. Protected by existing disabled gfe2_reloadable_flag_quic_enable_version_99.
5 files changed