tree abd0bcf792786d588dcb2360e9c1cf4ed357adcd
parent 4f95c4097fa1bc7f123547e47ecf804abaa526cd
author renjietang <renjietang@google.com> 1582063913 -0800
committer Copybara-Service <copybara-worker@google.com> 1582063953 -0800

Add WritevData() in StreamDelegateInterface and let QuicSession::WritevData implement it.

gfe-relnote: no behavior change. not protected.
PiperOrigin-RevId: 295818988
Change-Id: Ic5f9e7bf8ec7c4fc63feaaee96b213911a386433