* Refactor analysis benchmark and collect more data (#20169)

This does some code cleanup to avoid duplication, improves the logs,
and records min and max values as well as the mean.

* Fix typo that led to infinite loop

* Revert "increase size of user account drawer headers to 48 by 48 (#20266)"

This reverts commit 4a7b4a4d.

* Revert "EditableText Cursor can be set to not blink for testing (#20004)"

This reverts commit d041b319.

* Revert "Refactor analysis benchmark and collect more data (#20169)"

This reverts commit 5ea0a135.

This does some code cleanup to avoid duplication, improves the logs,
and records min and max values as well as the mean.

- Check memory usage in release builds, not profile.
- Use multiple runs and average the results.

* Revert "Add pub cache, artifacts, pkgs to Cirrus cache (#20080)"

This reverts commit 07e93b38.

* Revert "Reduce noise on the memory benchmarks (#19630)"

This reverts commit 8eb5cb7d.

- Check memory usage in release builds, not profile.
- Use multiple runs and average the results.

It was causing problems rolling Flutter into Fuchsia

* Tell flutter to quit directly

Fixes #19208.

* Tweak comment

* re-enable lint unnecessary_const

* remove trailling whitespaces

* remove unnecessary const (after merge)

* Remove uses of deprecated constants
* Change int.parse to int.tryParse where appropriate

Flutter app development has been Dart 2 only for a significant amount of
time, and we're about to remove all support for Dart 1.

This reverts commit cc1cf13e.

Revert "Revert "Roll engine to fed2ea458ed49088d33eddabc546ba56d600c717 (includes dart roll) again (#19277)" (#19295)" (#19322)

This reverts commit cc122f16.

Revert "Roll engine to fed2ea458ed49088d33eddabc546ba56d600c717 (includes dart roll) again (#19277)" (#19295)

This reverts commit 700cb767 as it
breaks Windows tests.

* Revert "Revert "Roll engine to fed2ea458ed49088d33eddabc546ba56d600c717 (includes dart roll) (#19044)" (#19276)"

This reverts commit cf932490 as it also
includes fix for type error that broke tests.

* Add type cast for dart2 type checks.

* Move up to latest goldens

* Make inDirectory() type-parameterized.

* Add typecasting to transitions_perf_test.dart and microbenchmarks.

* Add boolean flag initialization in save_catalog_screenshots.dart

* Add type conversion to gallery transition test

Revert "Roll engine to fed2ea458ed49088d33eddabc546ba56d600c717 (includes dart roll) (#19044)" (#19276)

This reverts commit f4a038da as it breaks microbenchmark tests.

* Roll engine to rolled dart
Add connectionTimeout property to class that extends HttpOverrides.
Upgrade packages.
Add more type fixes.
Update goldens hash.
Add more type fixes.
Upgrade packages.
Fix tests.
Remove strong-mode from analysis options yaml file.
Increase dev/devicelab timeout from 2 to 10 seconds.
Added getVM to waitForViews. Fix type errors in compileExpression.

* Pick up engine revision with fix for microbenchmarks regression.
Increase default timeout from 20/30 to 60s.

This should make it more obvious from the error what's gone wrong if we see a repeat of #19096 (previously the error was something like "Bad state: future already completed").

This reverts commit edc16473.

Await stream cancellations before trying to complete

This fixes #18727 

This is an attempt to reland #18488 with less breakage on macOS.

Add `flutter attach` command.

This command allows Flutter to connect to applications that haven't been launched using `flutter run`.

Reported for the hello_world compile benchmark in devicelab for now.

... and make sure they fail if they can't report the size.

This reverts commit 77508722.