As part of eliminating the Flutter buildroot
(https://github.com/flutter/flutter/issues/67373), we are moving all
third-party dependencies from //third_party to //flutter/third_party.
Once all third-party dependencies have been migrated, tooling and config
will be moved and the buildroot will be eliminated altogether.
No tests changed because there is no semantic change to this PR. This is
simply relocating a dependency.
Re-submit the changes to enable windows pre-push checks.
This patch changes how `ci/bin/format.dart` generate diffs from `diff` and `patch` commands to `git diff` and `git apply` in order to have a common method for these operations on all platforms. Windows installations don't have diff and patch commands available by default and many implementations which provide such commands work differently than the UN*X tools. Git however works consistently across all platforms.
Additionally, this patch also changes the python executable in some of the pre-push components affected by this to `vpython3` to continue the effort started at flutter/flutter#108474 and I also removed the `--no-sound-null-safety` parameter in the ci/format.sh, ci/format.bat files
NOTE: Since the original patch caused some issues, I suggest that this should be tested more carefully before it is merged.
### Issues fixed by this PR
* flutter/flutter#108122
* flutter/flutter#107920
* flutter/flutter#86506
* flutter/flutter#106615
### [flutter/tests] repo impact
None.
writing and running engine tests.
[C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style
This converts the ci/format.sh script to a Dart script that uses process_runner and isolates to multi-process the clang-format, diffs, and grepping needed to do the formatting changes.
It also will (by default) only check the formatting of changed files.
The user can optionally check all files (--all-files) or do only some types of checks with --check. --verbose prints the versions of the tools used for Clang format and Java format.
Specifying --fix will cause any formatting errors that would have been detected to be fixed.
This cleans up the ci scripts so that they can be run from an arbitrary directory, and so that they don't have any bash lint issues, and are more explicit about which dart/pub/dartanalyzer executable they run.
I also fixed the format script to take a "--fix" argument that will fix all of the formatting issues found, including trailing whitespace and gn files.
I added a warning to the license script about untracked/ignored files in the fluttter repo because those so often trip up the license script.
I added missing license information to the ci scripts too.
There's now a bit of boilerplate at the beginning of each script (the follow_links function) in order to reliably find the actual location of the script: I'd put it into a common file, except that that code would be needed to reliably find the common location too, so I needed to duplicate it. It's the same boilerplate as what is used in the flutter/flutter repo for the flutter and dart scripts.
I deleted the ci/test.sh script, since it seems to be obsolete (the test it tries to run doesn't exist anywhere).
I got tired of waiting for it to run, so I added some of the "worker" queue code that I wrote for the assets-for-api-docs generator.
I also tried out putting all the files in one call to clang-tidy with the -p argument, but that was still a lot slower because it runs them all on one core. This runs separate jobs for each file, simultaneously, and then reports the results at the end (associated with each file, of course).
