tree 52d225b65ac143a620dadceb4ba36f0a24afdc83
parent 61e3afd1c419c3238b7f0d5cea841b34ad727fb0
author Lei Zhang <thestig@chromium.org> 1633029797 +0000
committer Pdfium LUCI CQ <pdfium-scoped@luci-project-accounts.iam.gserviceaccount.com> 1633029797 +0000

Reimplement pdfium::Optional with absl::optional.

Now that abseil is available, replace pdfium::Optional with
absl::optional. third_party/base/optional.h continues to exist for now
to help bridge the transition.

Bug: pdfium:1726
Change-Id: Ie5b28493837892cb1895c36a3568a5dcd981a85b
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/85514
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>