* 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.

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

Pass extra front-end and gen_snapshot options to GenerateDependencies gradle task, as it also runs 'flutter build aot' (#14980)

https://github.com/dart-lang/pub/issues/1812

* [semantics]: minor docs & style clean-up

* remove a

* add a debug check that the returned Type of State.initState and State.didUpdateWidget are not Futures

* add test to verify that async lifecycles throw FlutterErrors

* address some feedback, match implementation of setState check

* address feedback from hixie

* fix odd spacing in test

* Run dev/bots/test's flutter drive test in preview-dart-2

* Fix extension callback type

* More type fixes

Fixes https://github.com/flutter/flutter/issues/15136

Someone ended up with STAMP_PATH containing a blank line.

Also, replace [ with [[.

* [tools] consolidate "preview Dart 2" option in BuildInfo

* format BuildInfo constructor