* fix spacing issue and add test for supportsHardwareRendering

* remove extra async tag

* move spacing to prev line

Make flutter test support the --track-widget-creation flag.
Add widget creation location tests. Tests are skipped when
--track-widget-creation flag is not passed.

* Return copied kernel filename.

This fixes 'flutter test --preview-dart-2' crash.

The first child fits on the line if the line can accomodate its width.
After the first child the line needs room for the child's width plus spacing.

This moves toward more consistency in our messaging. Apps are
launched using --debug, so the banner will reflect the build
mode.

* Create frontend compiler in `flutter test` lazily.

This is needed to avoid unwarranted runtime dependencies on Artifacts,
for example when in non-preview-dart-2 mode.
Refactor the compilation-related code into _Compiler class.

This is needed to fix 'flutter test --preview-dart-2 test/all.dart' in dev/devicelab

* Plug TextDirection into box_decoration background gradient

* Add test

* add device.supportsHardwareRendering and display a message if true

* Address some comments

This reverts commit 9d46ed2b.

(libtxt is enabled by default in this engine)

* RenderWrap.performLayout takes should take spacing into consideration when deciding to move to next row/axis

* fix spacing in text

* remove dart:developer import

* remove extra line

Some file I/O is piped from OS processes and never completes,
so without havign a timeout on the recording serialzation, we
end up waiting forever on that I/O to complete.

* Test gradle dependency file generation

* Fix lints, clean up comments, formatting.

* Fix `flutter test --preview-dart-2`  following last dart roll.

Incremental compiler maintains single incremental dill file, so for every test compilation that dill file has to be copied away for execution.

* Fix lints

* Fix some of the generic types specified to avoid runtime errors in
--preview-dart-2

  type 'YamlMap' is not a subtype of type 'Map<String, dynamic>' where
    YamlMap is from package:yaml/src/yaml_node.dart
    Map is from dart:core
    String is from dart:core

  package:flutter_devicelab/framework/manifest.dart 17:36       loadTaskManifest
  test/manifest_test.dart 14:33                                 main.<fn>.<fn>
  package:test/src/backend/declarer.dart 161:27                 Declarer.test.<fn>.<fn>.<fn>

* Add dynamic generic types to keep the analyer happy.

* Address code review comment.

* spelling: accommodate

* spelling: allotted

* spelling: anonymous

* spelling: artificial

* spelling: associated

* spelling: asset

* spelling: button

* spelling: canvas

* spelling: compatibility

* spelling: coverage

* spelling: condition

* spelling: decoration

* spelling: deferring

* spelling: diameter

* spelling: direction

* spelling: displacement

* spelling: dropdown

* spelling: needing

* spelling: environment

* spelling: exited

* spelling: expansion

* spelling: explore

* spelling: families

* spelling: horizontal

* spelling: increment

* spelling: indices

* spelling: internationalization

* spelling: labrador

* spelling: localizations

* spelling: midflight

* spelling: milliseconds

* spelling: minimum

* spelling: multiple

* spelling: multiplication

* spelling: navigator

* spelling: overridden

* spelling: package

* spelling: performance

* spelling: platform

* spelling: porsche

* spelling: position

* spelling: preceded

* spelling: precede

* spelling: precedence

* spelling: print

* spelling: property

* spelling: readily

* spelling: reproducibility

* spelling: rounded

* spelling: scroll

* spelling: separate

* spelling: separator

* spelling: services

* spelling: specific

* spelling: specify

* spelling: synchronously

* spelling: through

* spelling: timeout

* spelling: triangle

* spelling: trivial

* spelling: unusual

* spelling: then

* spelling: vertically

* spelling: visible

* spelling: visited

* spelling: voice

* Pass entry points JSON files to front-end server (#15180)

* Fix ios/debug build which uses 'flutter build aot': do not require entry points files and disable AOT transformations in this mode

* Revert "Pass entry points JSON files to front-end server (#15180)"

This reverts commit 0edea887.

Reason: buildbot failures on Mac.

* Add selection haptic feedback to Cupertino Pickers

* review

* don't haptic on android

* Add to Artifacts, and add optional arguments to entry points for flut… (#15185)

Add to Artifacts, and add optional arguments to entry points for flutter run and test to allow for wiring up the same with preview-dart-2 internally

* Changing packages uri here is not necessary

* Add a test that measures/verifies start from warm state(app was previously compiled).

* Remove json file from the first run.

This reverts commit e0f6e626.