* Add widget construction benchmark

* Add to device lab

Last batch of test fixes for general shard.

* Implement device selection for devicelab/run.dart

* Add test to --device-id option for devicelab/run

* Update dev/devicelab/bin/run.dart by jonahwilliam

* Rename deviceOperatingSystem enum mock -> fake
Co-authored-by: Jonah Williams <jonahwilliams@google.com>

* Update the arb filename parsing to account for underscores

* Generalize the locale searching algorithm

* Update filename and @@locale behavior to require them to match

22b099bc6 Roll Dart SDK from a9bef090e8cb to ea87c9b01a6a (15 revisions) (flutter/engine#19318) (#60332)

Missed this one. Needed for google3 and add2app workflows

* Add material page, cupertino page, and transition page classes

* update

* update comments

* fix test

* addressing comments

* make page getter private

The global packages path could cause tests to fail when it would be overriden to unexpected (in test setup) values. Remove most usage and make it a configuration on buildInfo, along with most other build information. Cleanup the asset builder to require the .packages path and the resident runners to no longer require it, since they already have the information in build_info.

It needs to stick around for the fuchsia deps we do not control.

Filled #60232 for remaining work.

Revert "Revert "[PageTransitionsBuilder] Fix 'ZoomPageTransition' built more than once (#58686)" (#59992)" (#60245)

These tests will hit the real Cache, failing if the flutter root has been modified

First pass at fixing #57985 and implementing #59602

This doesn't have enough metadata to be useful for IDEs yet, but it prevents the issue from getting worse while we iterate on it.

WebAssetServer could fail if some of the global statics it depended on were initialized in a different order. Fix this by removing globals.

Delete dwds startup test that needs to spawn a real server.

Remove the version checking and associated warnings. The Linux template
and build process will now be subject to more typical Flutter breaking
change policy, and should no longer require regularly deleting and
recreating the platform directory.