tree df20cd2c560280b0a11ef918a1ea8dfbaacb10e3
parent 344e1702242117fc2282189e1923073ac44eab95
author QUICHE team <quiche-dev@google.com> 1603812086 -0700
committer Copybara-Service <copybara-worker@google.com> 1603812134 -0700

Rename SpdyHeaderBlock to Http2HeaderBlock.

Salvaged from a botched Zwingli attempt:
http://refactor/16032281396283088571 created by go/Zwingli

Tested:
    TAP for global presubmit queue passed after automated deflaking of failures: http://mondo/deflaker/run/9a9c8d4e-50d0-47e0-970b-4b6c24ace2d7 http://mondo/deflaker/run/32a00ba5-16fa-4c78-9e10-afa7c56abc61
    http://test/OCL:338336205:BASE:339106963:1603774283861:13fcf12c
PiperOrigin-RevId: 339252455
Change-Id: Icce13789ba4b6e74894b0715ec897fc61aba9993