Chris Bracken 99f8815ee4 Roll abseil-cpp to 1db3bdd4eb208bef55c77f22aa94991e52225230 (flutter/engine#51062)
Our abseil dependency is a clone of Chromium's, located at:
https://chromium.googlesource.com/chromium/src/third_party/

which is a downstream copy of the source of truth, located at:
https://github.com/abseil/abseil-cpp

This rolls to Chromium commit 185f27671ca28c0f25d9d7a15b6e621f69972706,
then reapplies jsimmons@google.com's commits, in chronological order:
* 9ec8f453a42aad2f11a1760fe4ce6014a124edc2
* f92f9effc89af7692436c3b9fbb3a67f2239d893
* 61833f2c057a2b1993d871e8c51156aed1dd4354

Preparation for: https://github.com/flutter/flutter/issues/144201
Part of: https://github.com/flutter/flutter/issues/67373

## Pre-launch Checklist

- [X] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [X] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [X] I read and followed the [Flutter Style Guide] and the [C++,
Objective-C, Java style guides].
- [X] This patch complies with USDA policy on the use of bovine growth
hormone.
- [X] I listed at least one issue that this PR fixes in the description
above.
- [X] I added new tests to check the change I am making or feature I am
adding, or the PR is [test-exempt]. See [testing the engine] for
instructions on writing and running engine tests.
- [X] I updated/added relevant documentation (doc comments with `///`).
- [X] I signed the [CLA].
- [X] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#overview
[Tree Hygiene]: https://github.com/flutter/flutter/wiki/Tree-hygiene
[test-exempt]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo
[C++, Objective-C, Java style guides]:
https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style
[testing the engine]:
https://github.com/flutter/flutter/wiki/Testing-the-engine
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#handling-breaking-changes
[Discord]: https://github.com/flutter/flutter/wiki/Chat
2024-02-28 13:00:30 -08:00
..