tree 54291964ecb8a23a26a69b45609e1e17326dbbf6
parent 89e73569632ced2a66ad01e9cf7f5160caadaeae
author renjietang <renjietang@google.com> 1563822533 -0700
committer Copybara-Service <copybara-worker@google.com> 1563889635 -0700

Modify push_promise related methods to prepare for H3 push promise.

WritePushPromise() now returns void as no caller uses the returned size.
OnPushPromiseFrameStart() now takes in the frame lengths so that the frame can be consumed properly.

gfe-relnote: no prod behavior change, not protected.
PiperOrigin-RevId: 259377914
Change-Id: Ic89cdd785acf216e7fa5715426bbac30bf9b6045