Removes the legacy analysis options override and fixes all resulting issues. This is a combination of dart fix and manual changes (mostly mechanical, but some small restructuring to address warnings more cleanly, such as creating typed structs from args when they are used repeatedly to avoid repeated casting, or making things that were unnecessarily public private).
One small opportunistic extra cleanup is that the handling of null-safety prerelease versions is removed, as any new plugin would be written null-safe from the start, so we no longer need to allow those versions.
Part of flutter/flutter#76229
Standardizes all first-party copyrights on a single year, as is done in flutter/flutter and flutter/engine. All code now uses 2013, which is the earliest year that was in any existing copyright notice.
The script checks now enforce the exact format of first-party licenses and copyrights.
Fixesflutter/flutter#78448
In all copyright messages (and in the Xcode project organization name) standardize on "The Flutter Authors", adding "The Chromium Authors" to the Flutter AUTHORS list. This reduces inconsistency in the copyright lines in this repository, moving closer to a single consistent copyright+license (as in flutter/engine and flutter/flutter)
Updates the validation script to no longer accept "The Chromium Authors" or "the Chromium project authors" in first-party code.
Includes cleanup to simplify our setup. Major changes:
- Eliminate the NNBD plugin filtering for stable.
- Remove the temporarily-added beta branch testing.
- Enable Linux, macOS, and web on stable (Windows is LUCI-based)
- Combine the two different macOS matrix configurations now that they
are the same.
- Combine the two different Linux matrix configurations by using a single
Dockerfile (which now also includes clang-format)
- The web integration smoke test temporarily still uses the old Dockerfile,
now renamed, because the driver installer script doesn't support
Chrome 89 yet.
- Move most of the Linux tasks to lower-CPU machines to allow more
tasks to run in parallel without hitting the community limit.
- Reorder the tasks slightly and give them comments to identify
platform groupings
- Enabled web "build all plugins together" and "build all examples"
tests
