* 1ae95f795 Roll Skia from 318afe66e699 to 63a0a758ce14 (4 revisions) (flutter/engine#19335)

* b1b946904 Manual roll of Dart e24733ebd1...63cf56d925 (flutter/engine#19337)

* de68a7f3b Roll Skia from 63a0a758ce14 to f123f06aabd6 (9 revisions) (flutter/engine#19336)

* 220a83102 Move fuchsia/scenic integration behind #define (flutter/engine#19003)

* de74f8a58 migrate web engine implementation to null-safe Dart (flutter/engine#19172)

* 4cd3ec077 Fix broken mac/fuchsia compiles (flutter/engine#19339)

* 77e9f94b0 Roll Dart SDK from e24733ebd16c to 243ad5427564 (5 revisions) (flutter/engine#19338)

* 4333fc312 Roll Dart SDK from 243ad5427564 to 7fc61e77e225 (5 revisions) (flutter/engine#19342)

* b3cfbd230 Roll Fuchsia Mac SDK from YGK_M... to l3tHO... (flutter/engine#19343)

* a28b7f0f3 Implement onDisplayPlatformView (flutter/engine#19344)

* 1a4f38ff4 Roll Dart SDK from 7fc61e77e225 to 871f0ee31eb0 (4 revisions) (flutter/engine#19346)

* 3d61564ac Roll Fuchsia Linux SDK from _d0dW... to Y_dK2... (flutter/engine#19347)

* 727a38d8b Roll Fuchsia Mac SDK from l3tHO... to SuveI... (flutter/engine#19348)

* ccfa0e79e Roll Fuchsia Linux SDK from Y_dK2... to lgSTC... (flutter/engine#19349)

* 2ff740e9f Roll Dart SDK from 871f0ee31eb0 to f91547d6dd45 (1 revision) (flutter/engine#19350)

* 692dfb3fc update compilation rules for null-safety (flutter/engine#19386)

* 729ca5ee6 Roll Fuchsia Linux SDK from lgSTC... to ScRia... (flutter/engine#19389)

Remove unnecessary use of globals from base tests, and an android test. This changes the test to avoid bouncing through the global getters, which can lead to incorrectly cached zone values. Switches the memory filesystem implementation to the test implementation

This reverts commit 32000db5.

This reverts commit 1e843bb6.

https://github.com/flutter/gallery/commit/0c5ec2f285c1ec30b2ed15194bc8de755654a590 does not live on any branch.

This makes `pub get` in the macrobenchmarks folder.

```
$ git rev-list --max-count=100 0c5ec2f285c1ec30b2ed15194bc8de755654a590
fatal: bad object 0c5ec2f285c1ec30b2ed15194bc8de755654a590
```

Updated to the same commit on the master branch: https://github.com/flutter/gallery/commit/d00362e6bdd0f9b30bba337c358b9e4a6e4ca950.

The gallery repository history has been rewritten (see flutter/gallery#87), so updating to HEAD commit

* 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