This reverts commit e091d724.

This reverts commit 46edc802.

This fixes https://github.com/flutter/flutter/issues/39277

The following tests cover this change:
- packages/flutter/test/foundation/service_extensions_test.dart
- packages/flutter/test/scheduler/scheduler_test.dart

git@github.com:flutter/engine.git/compare/97807b534122...b16eab6affb7

git log 97807b534122..b16eab6affb7 --no-merges --oneline
2019-10-30 iska.kaushik@gmail.com Remove usage of yaml module from CIPD script (flutter/engine#13444)


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git@github.com:flutter/engine.git/compare/e609577d1201...97807b534122

git log e609577d1201..97807b534122 --no-merges --oneline
2019-10-30 matthew-carroll@users.noreply.github.com Automatically destroy FlutterEngine when created by FlutterActivity or FlutterFragment. (flutter/engine#13423)
2019-10-30 bkonyi@google.com Roll src/third_party/dart f30b494035..d50c158d42 (5 commits) (flutter/engine#13443)
2019-10-30 skia-flutter-autoroll@skia.org Roll src/third_party/skia 7da048b5e8f1..7df14d055703 (7 commits) (flutter/engine#13441)


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git@github.com:flutter/engine.git/compare/5051bef17bdc...e609577d1201

git log 5051bef17bdc..e609577d1201 --no-merges --oneline
2019-10-30 mklim@google.com Revert "Turn on RasterCache based on view hierarchy (#13360)" (flutter/engine#13442)
2019-10-30 mklim@google.com Turn on RasterCache based on view hierarchy (flutter/engine#13360)
2019-10-30 bkonyi@google.com Roll src/third_party/dart d3a5b82355..f30b494035 (9 commits)


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Fixes directional focus traversal when there are no available nodes to traverse to.

git@github.com:flutter/engine.git/compare/36303c61b63f...5051bef17bdc

git log 36303c61b63f..5051bef17bdc --no-merges --oneline
2019-10-30 skia-flutter-autoroll@skia.org Roll src/third_party/skia ebdae1144978..7da048b5e8f1 (1 commits) (flutter/engine#13438)
2019-10-30 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from DfLN8... to p7XYM... (flutter/engine#13437)
2019-10-30 bkonyi@google.com Roll src/third_party/dart eb4ab61349..d3a5b82355 (4 commits)
2019-10-30 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from goLxs... to nhX22... (flutter/engine#13435)
2019-10-30 skia-flutter-autoroll@skia.org Roll src/third_party/skia c3a51a5e47ba..ebdae1144978 (1 commits) (flutter/engine#13434)
2019-10-30 skia-flutter-autoroll@skia.org Roll src/third_party/skia 1ae54bc22fc2..c3a51a5e47ba (1 commits) (flutter/engine#13433)
2019-10-30 bkonyi@google.com Roll src/third_party/dart ae5a86d790..eb4ab61349 (7 commits)
2019-10-30 dnfield@google.com Set the install name at link time for darwin dylibs (flutter/engine#13428)
2019-10-30 mehmetf@users.noreply.github.com Add isRunningInRobolectricTest back (flutter/engine#13424)
2019-10-30 skia-flutter-autoroll@skia.org Roll src/third_party/skia 76d22d1ee8cb..1ae54bc22fc2 (26 commits) (flutter/engine#13430)
2019-10-30 bkonyi@google.com Roll src/third_party/dart ebd059030b..ae5a86d790 (3 commits)
2019-10-30 skia-flutter-autoroll@skia.org Roll fuchsia/clang/linux-amd64 from Vghc_... to WxGHg... (flutter/engine#13420)
2019-10-30 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from mc3jR... to DfLN8... (flutter/engine#13413)
2019-10-30 bkonyi@google.com Roll src/third_party/dart 780af0fcfc..ebd059030b (17 commits)
2019-10-30 chinmaygarde@google.com Make sure root surface transformations survive resetting the matrix directly in Flow. (flutter/engine#13405)
2019-10-30 iska.kaushik@gmail.com [fuchsia] [packaging] Create a script to upload debug symbols to CIPD (flutter/engine#13422)
2019-10-29 47866232+chunhtai@users.noreply.github.com Revert "fix fml_unittes is not run during presubmit (#13395)" (flutter/engine#13425)
2019-10-29 30870216+gaaclarke@users.noreply.github.com Made it so we clean up gl resources when view controllers get deleted. (flutter/engine#13396)
2019-10-29 30870216+gaaclarke@users.noreply.github.com Added back in empty lifecycle events so we don't break people that used to call `super`. (flutter/engine#13421)
2019-10-29 47866232+chunhtai@users.noreply.github.com fix fml_unittes is not run during presubmit (flutter/engine#13395)
2019-10-29 skia-flutter-autoroll@skia.org Roll src/third_party/skia f22dda960136..76d22d1ee8cb (2 commits) (flutter/engine#13411)


If this roll has caused a breakage, revert this CL and stop the roller
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This reverts commit 0dc5ea4a.

git@github.com:flutter/engine.git/compare/46c757be07fd...36303c61b63f

git log 46c757be07fd..36303c61b63f --no-merges --oneline
2019-10-29 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from sLCwg... to goLxs... (flutter/engine#13412)
2019-10-29 skia-flutter-autoroll@skia.org Roll fuchsia/clang/mac-amd64 from EpbPE... to 6tttO... (flutter/engine#13418)
2019-10-29 bkonyi@google.com Roll src/third_party/dart 0b96f9f9ae..780af0fcfc (8 commits)


If this roll has caused a breakage, revert this CL and stop the roller
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Please CC cbracken@google.com on the revert to ensure that a human
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Check for a binary callback first since a function with an optional
second argument will match both typedefs.

Remove documentation around a synchronous error following some other
error or value - a synchronous error can never follow a value or an
asynchronous error. If there is a synchronous error it will _always_ be
the first thing to happen.

Add a test for a unary error handler and an error handler with an
optional stack trace argument.

* Separate DropdownButtonFormField and DropdownButton test files

The environment variable for all desktop platforms is currently
ENABLE_FLUTTER_DESKTOP to allow backward compatibility with existing
workflows. However, this is actually causing issues since 'flutter
config' provides a better experience (most importantly, IDEs will work
correctly, which is generally not the case with the environemnt
variable). Currently people following old (third-patry) instructions
don't realize that they are missing available functionality, so aren't
looking for the current instructions.

In adddition, this will be confusing as different platform graduate to
channels other than master at different times.

To resolve both issues, the environment variable fallback is now
separate for each desktop platform, and follows a naming scheme
consistent with the web environment variable.

* Add onLongPress to Buttons.

* Button enabled status will now respond to onLongPress

git@github.com:flutter/engine.git/compare/419f5d594afc...46c757be07fd

git log 419f5d594afc..46c757be07fd --no-merges --oneline
2019-10-29 iska.kaushik@gmail.com [dart_runner] Common libs need to exist for aot runner (flutter/engine#13419)
2019-10-29 jason-simmons@users.noreply.github.com Fix the dry run mode of the GN format checker script (flutter/engine#13406)
2019-10-29 jason-simmons@users.noreply.github.com Reformat BUILD.gn files to comply with the format checker presubmit script (flutter/engine#13401)
2019-10-29 jason-simmons@users.noreply.github.com Use DartExecutor.getBinaryMessenger in FlutterNativeView instead of deprecated send methods (flutter/engine#13403)
2019-10-29 bkonyi@google.com Roll src/third_party/dart e1fce75301..0b96f9f9ae (28 commits)
2019-10-29 matthew-carroll@users.noreply.github.com Converted ActivityAware and ServiceAware Lifecycles to opaque objects (#43670) (flutter/engine#13402)


If this roll has caused a breakage, revert this CL and stop the roller
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This re-lands the change that adds focus nodes, hover, and shortcuts to switches, checkboxes, and radio buttons. (#43213), with fixes for the web tests that weren't enabled in the master that it was synced to when I first landed it.

* Update README to include non-mobile targets

* Tweak headings

* Adjust and refactor all MaterialButton tests into its respective file

This is to account for the flutter_runner migration.
fxb/fl-250 has more context. This change specifically uses
the build rules that were added as a part of: fxr/333681

This reverts commit b9eb3f71.

We fixed the issue by updating the constructors.