Trying to reland #140115 which I had to revert in #142889 because [it broke the tree](https://github.com/flutter/flutter/pull/140115#issuecomment-1925774719).

In this PR I fixed the post-submit following tests:

Re-sets two jvmargs that were getting cleared because we set a value for `-Xmx`. Could help with https://github.com/flutter/flutter/issues/142957. Copied from comment here https://github.com/flutter/flutter/issues/142957:
>Two random things I ran into while looking into this that might help:
>
>1. Gradle has defaults for a couple of the jvmargs, and setting any one of them clears those defaults for the others (bug here https://github.com/gradle/gradle/issues/19750). This can cause the "Gradle daemon to consume more and more native memory until it crashes", though the bug typically has a different associated error. It seems worth it to re-set those defaults.
>2. There is a property we can set that will give us a heap dump on OOM ([-XX:HeapDumpOnOutOfMemoryError](https://docs.oracle.com/javase/8/docs/technotes/guides/troubleshoot/clopts001.html))

Mostly just a find and replace from `find . -name gradle.properties -exec sed -i '' 's/\-Xmx4G/-Xmx4G\ \-XX:MaxMetaspaceSize=2G\ \-XX:+HeapDumpOnOutOfMemoryError/g' {} \;`, with the templates and the one test that writes from a string replaced by hand. I didn't set a value for `MaxMetaspaceSize` in the template files because I want to make sure this value doesn't cause problems in ci first (changes to the templates are essentially un-revertable for those who `flutter create` while the changes exist).

Reverts flutter/flutter#140115

Initiated by: bartekpacia

Reason for reverting: broke the tree

- [`Linux firebase_abstract_method_smoke_test`](https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20firebase_abstract_method_smoke_test/15844/overview)
- [`Linux_android android_view_scroll_perf__timeline_summary`](https://ci.chromium.org/ui/p/flutter/builders/prod/Linux_android%20android_view_scroll_perf__timeline_summary/13453/overview)
- [`Linux_android platform_views

Original PR Author: bartekpacia

Reviewed By: {gmackall}

This change reverts the following previous change:
Original Description:
This PR updates almost* all Gradle buildscripts in the Flutter repo the `example` and `dev` (in particular, in `dev/integration_tests` and in `dev/benchmarks`) directories to apply Flutter's Gradle plugins using the declarative `plugins {}` block.

*almost, because:
- add-to-app (aka hybrid) apps are not migrated (related https://github.com/flutter/flutter/issues/138756)
- apps that purposefully use build files to ensure backward compatibility (e.g. [`gradle_deprecated_settings`](https://github.com/flutter/flutter/tree/3.16.0/dev/integration_tests/gradle_deprecated_settings))

This PR updates almost* all Gradle buildscripts in the Flutter repo the `example` and `dev` (in particular, in `dev/integration_tests` and in `dev/benchmarks`) directories to apply Flutter's Gradle plugins using the declarative `plugins {}` block.

*almost, because:
- add-to-app (aka hybrid) apps are not migrated (related https://github.com/flutter/flutter/issues/138756)
- apps that purposefully use build files to ensure backward compatibility (e.g. [`gradle_deprecated_settings`](https://github.com/flutter/flutter/tree/3.16.0/dev/integration_tests/gradle_deprecated_settings))

Fixes https://github.com/flutter/flutter/issues/140169

This PR increases Android's `minSdkVersion` to 21.

There are two changes in this PR aside from simply increasing the number
from 19 to 21 everywhere.

First, tests using `flutter_gallery` fail without updating the
lockfiles. The changes in the PR are the results of running
`dev/tools/bin/generate_gradle_lockfiles.dart` on that app.

Second, from
[here](https://developer.android.com/build/multidex#mdex-pre-l):
> if your minSdkVersion is 21 or higher, multidex is enabled by default
and you don't need the multidex library.

As a result, the `multidex` option everywhere is obsolete. This PR
removes all logic and tests related to that option that I could find.
`Google testing` and `customer_tests` pass on this PR, so it seems like
this won't be too breaking if it is at all. If needed I'll give this
some time to bake in the framework before landing the flutter/engine
PRs.

Context: https://github.com/flutter/flutter/issues/138117,
https://github.com/flutter/flutter/issues/141277, b/319373605

Revert "Make tests more resilient to Skia gold failures and refactor flutter_goldens for extensive technical debt removal (#140101)" (#141814)

Reverts https://github.com/flutter/flutter/pull/140101

That PR somehow made non-matching gold tests not fail at HEAD.

Fixes https://github.com/flutter/flutter/issues/141880
- Blocked by https://github.com/flutter/flutter/issues/140169
  - https://github.com/flutter/flutter/pull/141427

Fixes https://github.com/flutter/flutter/issues/141032

We pinned to web_socket_channel v2.4.1 because v2.4.2 was retracted, however v2.4.3 is now available.

Reverts flutter/flutter#140979
Initiated by: loic-sharma
This change reverts the following previous change:
Original Description:
Fixes https://github.com/flutter/flutter/issues/137163
Fixes https://github.com/flutter/flutter/issues/139181

Fixes https://github.com/flutter/flutter/issues/137163
Fixes https://github.com/flutter/flutter/issues/139181

This PR was generated by `flutter update-packages --force-upgrade`.

Contributes to: https://github.com/flutter/flutter/issues/135856

1. Move leak_tracker and leak_tracker_testing out of direct dependencies.
2. Move leak_tracker_flutter_testing from dev to prod dependencies for flutter_test

It is prerequisite for https://github.com/flutter/flutter/issues/135856

Pinning the package:web dependency constrains downstream packages from
using newer versions and making sure they support the version pinned in
Flutter. Since the usage of package:web in Flutter is light, we should
instead have a small shim like the engine and keep package:web as a dev
dependency only.

Contributes to https://github.com/flutter/flutter/issues/135856

Updates Gradle version for Flutter project templates and integration tests to at least 7.6.3 (changed all of those with versions below it) to fix security vulnerability.

Part of fix for https://github.com/flutter/flutter/issues/138336.

test-exempt: rolling dependencies

## Description

This PR adds a new section to the Android manifest file.
This section is required for https://github.com/flutter/engine/pull/44579 (because it uses `PackageManager.queryIntentActivities` API ), see:

1. https://developer.android.com/training/package-visibility?hl=en
2. https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT
3. https://developer.android.com/reference/android/content/pm/PackageManager?hl=en#queryIntentActivities(android.content.Intent,%20android.content.pm.PackageManager.ResolveInfoFlags)

## Related Issue

Android manifest update for https://github.com/flutter/flutter/issues/107603

## Tests

This PR updates the integration tests and examples Android manifest files, this will help catch error or warning related to this change.

This version is needed so that dart:js_interop can move to extension
types. Also adds some code to handle some breaking changes:

- Body -> Response. Body was an IDL interface mixin type we exposed in
dart:html. Going forward, users should either use Request or Response.
- Casts to JSAny. These are temporary until we move package:web types to
extension types. Currently, package:web types can't implement JSObject
as JSObject will move to be an extension type itself.
Co-authored-by: Kevin Moore <kevmoo@users.noreply.github.com>

Re-lands https://github.com/flutter/flutter/pull/137191.

The fix for the issue causing that PR to be reverted was tested in this PR but ultimately landed separately in https://github.com/flutter/flutter/pull/138093.

Reverts flutter/flutter#137191
Initiated by: camsim99
This change reverts the following previous change:
Original Description:
Adds support for Android 34 in the following ways:

- Bumps integration tests compile SDK versions 33 --> 34
- Bumps template compile SDK version 33 --> 34
- Also changes deprecated `compileSdkVersion` to `compileSdk`

Part of https://github.com/flutter/flutter/issues/134220

Adds support for Android 34 in the following ways:

- Bumps integration tests compile SDK versions 33 --> 34
- Bumps template compile SDK version 33 --> 34
- Also changes deprecated `compileSdkVersion` to `compileSdk`

Part of https://github.com/flutter/flutter/issues/134220

Analyzer's dependency on autosnapshotting causes issues.

Because every version of integration_test from sdk depends on leak_tracker from hosted and autosnapshotting depends on leak_tracker from path, integration_test from sdk is forbidden.
So, because autosnapshotting depends on integration_test from sdk, version solving failed.

Contributes to: https://github.com/flutter/flutter/issues/135856

This PR also adds transitive dependency on  web_socket_channel, crypto, typed_data. `web_socket_channel` is needed to request retaining path for not GCed objects from VM Service. Two others are needed to serve web_socket_channel.

The dependency on leak_tracker is pinned:
https://github.com/flutter/flutter/blob/aea562114c4d8c220c9079e82d89a7da4164409f/packages/flutter_tools/lib/src/commands/update_packages.dart#L40

This PR was generated by `flutter update-packages --force-upgrade`.

Generated by running `flutter update-packages --force-upgrade`

Updates vm_service to [12.0.0](https://pub.dev/packages/vm_service/versions/12.0.0) and dwds to [22.0.0](https://pub.dev/packages/dwds/versions/22.0.0)

The changes to `packages/flutter_tools/lib/src/isolated/devfs_web.dart` are for the new interface of DWDS introduced in https://github.com/dart-lang/webdev/pull/2243

FYI @bkonyi

* Allow latest pkg:material_color_utilities
* Bump other dependencies to their latest - including pkg:web

Fixes: https://github.com/flutter/flutter/issues/135716
leak_tracker is left pinned because future updates are going to be breaking.

This PR is the result of running:

```console
$ flutter upgrade-packages --force-upgrade
```

### Issues

* Fixes https://github.com/flutter/flutter/issues/135075
* Supersedes #135081

More up to date version of https://github.com/flutter/flutter/pull/133786.

Fixes https://github.com/flutter/flutter/issues/111304

I'm seeing these in the bot reports every week. Hopefully this is all of
them, and hopefully 4GB is enough.

New feature in upcoming Dart 3.2. See https://github.com/dart-lang/language/issues/2020. Feature is enabled by bumping the min SDK version to 3.2.

Part of https://github.com/flutter/flutter/issues/134476.

Generated by running `flutter update-packages --force-upgrade`