tree 4def58f296ed93c95f0f00c881d1c112fff1d231
parent 6df640d9ac49b76d01774bbb538cdc1d1f62193c
author diannahu <diannahu@google.com> 1686858682 -0700
committer Copybara-Service <copybara-worker@google.com> 1686858728 -0700

Update the BalsaHeadersSequence internal data structure from std::list to absl::InlinedVector.

The std::vector/absl::InlinedVector may be somewhat more performant by default
overall, especially once we switch from BalsaHeaders to
std::unique_ptr<BalsaHeaders>, which is planned for the next CL (cl/538578037).
Some interesting discussion on this comparison is at
https://stackoverflow.com/q/2209224. The std::vector/absl::InlinedVector is
also somewhat easier to work with, though there is a fond farewell to
`&*iter_++`.

Inspired by http://google3/gfe/gfe2/http2/http2_writer.h;l=164;rcl=524908183 :D

PiperOrigin-RevId: 540664124