This reverts commit ab707aca.

https://github.com/flutter/engine/compare/74975a4d1716...0602dbb27547

git log 74975a4d17162f23bea92ac298d1b96c2995a529..0602dbb27547cd03d8f8e816b7995cace854f7e6 --no-merges --oneline
0602dbb27 Roll src/third_party/dart 9dcb026b26..6e0d978505 (72 commits)

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This reverts commit 14414f35.

This reverts commit 160a5680.

This will manually land https://github.com/flutter/engine/pull/8983 in
the framework.

Instead of sharing the iOS codepath that uses an ObjC generated plugin
registrant and expecting plugins to have an ObjC interface layer, switch
to generating a Swift registrant and expecting plugins to have a Swift
interface.

This means plugins on macOS that use Swift won't need an ObjC wrapper,
and plugins that use ObjC will need a Swift wrapper (inverting the
structure relative to iOS).

When an AndroidView gains focus we invoke the(newly introduced)
'TextInput.setPlatformViewClient' text_input system channel method
which sets the platform view as the text input target.

When the AndroidView loses focus we send a clearFocus message to
platform views system channel(so the engine can clear the focus from
the platform view).

This PR is going to land before the engine implementation is rolled to
the framework, we swallow MissingPluginException for the newly
introduced method channel methods so this is a no-op before the engine
is ready(after the engine is rolled with the corresponding change I'll
remove the logic to swallow the exceptions).

The engine counterpart is in: flutter/engine#9203

Moves the logic for finding vcvars64.bat to a new VisualStudio class
that encapsulates finding, and providing information about, VisualStudio
installations. Adds a validator for it, and runs it for Windows
workflows in doctor.

This wasn't included originally since it didn't seem to be necessary for
macOS in testing, but not having it breaks Swift plugins. This matches
the iOS Swift Podfile template.

Creates a Material Design range slider.

The range slider is based off the updated slider, with the main difference being that it has 2 thumbs.
By default, the thumbs cannot pass each other and both the thumb and the value indicator create a stroke when they are overlapping for better visibility.

* Whitelist adb.exe heap corruption exit code.

In android platform tools 29.0.0 adb.exe shell seems to be exiting with heap corruption exit code, otherwise producing results as expected. This PR whitelists this exit code on Windows.

Fixes https://github.com/flutter/flutter/issues/33938.

* Fix condition

* Fix 'shell am start' command

* Fix stop command

* Refactor into runAdbMostlyChecked(Sync/Async)

* runAdbMostlyChecked -> runAdbChecked

* include advice about dispose

The same note in https://flutter.dev/docs/cookbook/forms/text-field-changes

* Include remember to dispose texteditingcontroller

Almost the same note here https://flutter.dev/docs/cookbook/forms/text-field-changes#2-use-a-texteditingcontroller .

* include remember to dispose TextEditingController and link to see also

* remove extras spaces and duplicated comment

* include details about using Positioned.fill

* Revert "include details about using Positioned.fill"

This reverts commit c06196f8884d20c547d97edae71d26f7a61701be.

* rever comment about Positioned.fill

* Include of and remove extra white space

Include of and remove extra white space in the end of line

* improve link description to cookbook

///  * Learn how to use a [TextEditingController] in one of our [cookbook recipe]s.(https://flutter.dev/docs/cookbook/forms/text-field-changes#2-use-a-texteditingcontroller)

* include of, remove extra white space and improve description link to cookbook.

include of, remove extra white space and improve description link to cookbook.

* include of, remove extra white space and improve link description to cookbook

include of, remove extra white space and improve link description to cookbook

* include of, remove extra white space and improve link description to cookbook

include of, remove extra white space and improve link description to cookbook

* remove extra white spaces

* remove extra white space

# Description
Currently the benchmarks test prints a scary warning message, even when it passes, that a benchmark is being run with asserts enabled.

Normally we don't want developers to do this, because the performance of code with asserts is not characteristic of what end-users will experience. However, we need to unit-test benchmarkWidgets, so I've added a contraindicated option to suppress the warning for the test.

# Related Issues
25049 (comment)

Revert "Add currentSystemFrameTimeStamp to SchedulerBinding (#33886)"

This reverts commit 61b83d32.

https://github.com/flutter/engine/compare/782654846230...3371da1e0951

git log 78265484623037c6544dfd5380367bca29fa27b0..3371da1e09511cb047c746e8209ec91550714b05 --no-merges --oneline
3371da1e0 Add platform_fuchsia.cc for default font on fuchsia (flutter/engine#9204)

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https://github.com/flutter/engine/compare/afb9d510c3bb...782654846230

git log afb9d510c3bb0f1b97980434b41200a2d3491697..78265484623037c6544dfd5380367bca29fa27b0 --no-merges --oneline
782654846 Align fuchsia and non-fuchsia tracing (flutter/engine#9199)
5ea125eaf Switch PlatformViewsController from Activity ref to Application ref. (flutter/engine#9193)
fd4368c85 Skip golden tests on non-Linux OSes (flutter/engine#9198)

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This fixes a rather embarrassing bug in ShortcutManager that happened because I forgot to add the tests I meant to add.

This fixes the bug, and adds the tests.

See https://github.com/flutter/flutter/issues/31691

This adds support for game controller buttons. It adds some supplemental USB HID codes that aren't available from the Chromium source code, and maps those on Android to the game pad buttons that Android supports. Other platforms are not supported yet.