tree 39bf0b84a5b9306b8f8c9fb671c9d159a0937a1c
parent 6c2d64f959a2f11492f35d02bf7beb2dc25da807
author renjietang <renjietang@google.com> 1558397894 -0700
committer Copybara-Service <copybara-worker@google.com> 1558429678 -0700

Refactor GetOrCreateStream() and GetOrCreateDynamicStream() and remove
StreamHandler.

StreamHandler is no longer needed since pending stream handling is done
separately from normal streams.

GetOrCreateStreamImpl() is no longer needed since GetOrCreateStream() now only
deals with normal streams.

gfe-relnote: code refactor, no bahavior change. Not flag protected.
PiperOrigin-RevId: 249158527
Change-Id: I579d1ce1705743e5ebbe2dc6f699705620a46ac4