This change shows the magnifier on touch drag gestures for Android and iOS and hides it when the drag ends.

Fixes #118268

Fixes https://github.com/flutter/flutter/issues/125085

Allows use of APIs such as `Iterable.firstOrNull`.

Adds `todo` link in code for #125155.

https://github.com/flutter/engine/compare/0a53cf6f7a4e...d726345bf230

2023-04-19 bdero@google.com [Impeller] Comprehensively label snapshots (flutter/engine#41325)
2023-04-19 bdero@google.com [Impeller] Fix transform regressions for chained filters (flutter/engine#41332)

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Rename variables, update comments, etc from `network` to `wireless` to keep it more uniform.

Also, move non-overriden messages related to device selection into the file they're used.

Part 7 in breakdown of https://github.com/flutter/flutter/pull/121262.

The regression was caused by the previous pr https://github.com/flutter/flutter/pull/124624 changes postframecallback to scheduleframecallback. The reason is that if a new postframecallback was scheduled when running a postframecallback. The newly added postframecallback will be execute on the next frame. However, adding postframecallback will not schedule a new frame. So if there isn't other widget that schedule a new frame, the newly added postframecallback will never gets run.

After changing to scheduleframecallback, it causes an issue that transient callback may be called when rendering tree contains dirty layout information that are waiting to be rebuilt.

Therefore, I use microtask to get around of the postframecallback issue instead of scheduleframecallback.

fixes https://github.com/flutter/flutter/issues/125065

https://github.com/flutter/packages/compare/faf53fb3998c...88591becfb3f

2023-04-19 engine-flutter-autoroll@skia.org Roll Flutter from 42fb0b23 to 3476b966 (20 revisions) (flutter/packages#3760)
2023-04-19 49699333+dependabot[bot]@users.noreply.github.com Bump cirrusci/flutter from `794fbbc` to `d99b1ba` in /.ci (flutter/packages#3724)
2023-04-18 10687576+bparrishMines@users.noreply.github.com [webview_flutter] Adds support to listen to url changes  (flutter/packages#3313)
2023-04-18 engine-flutter-autoroll@skia.org Roll Flutter from 15cb1f84 to 42fb0b23 (19 revisions) (flutter/packages#3756)
2023-04-18 49699333+dependabot[bot]@users.noreply.github.com [webview]: Bump com.android.tools.build:gradle from 7.2.2 to 8.0.0 in /packages/webview_flutter/webview_flutter_android/android (flutter/packages#3739)
2023-04-18 stuartmorgan@google.com [local_auth] Convert Android to Pigeon (flutter/packages#3748)

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https://github.com/flutter/engine/compare/d626f16cb9a3...0a53cf6f7a4e

2023-04-19 chinmaygarde@google.com [Impeller] Make //impeller/display_list TU naming consistent. (flutter/engine#41174)

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Relanding: https://github.com/flutter/flutter/pull/124810

Fixes: https://github.com/flutter/flutter/issues/124808

https://github.com/flutter/engine/compare/609f9d536494...d626f16cb9a3

2023-04-19 mdebbar@google.com [web] Remove non-ShadowDom mode (flutter/engine#39915)
2023-04-19 30870216+gaaclarke@users.noreply.github.com [impeller] added moltenvk notice (flutter/engine#41317)
2023-04-19 skia-flutter-autoroll@skia.org Roll Skia from 8af1dd9659f0 to ad90b6bd4760 (3 revisions) (flutter/engine#41337)
2023-04-19 skia-flutter-autoroll@skia.org Roll Dart SDK from 27e71f19c144 to fe8bb0565a30 (2 revisions) (flutter/engine#41336)
2023-04-19 skia-flutter-autoroll@skia.org Roll Fuchsia Mac SDK from yD5a3QBJHUFM4nVou... to suSuT9F8zuP-pBg-E... (flutter/engine#41334)
2023-04-19 skia-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from Cy5LG4U2InaFLkJGz... to Tun7i4VLz6ncx8JJJ... (flutter/engine#41331)
2023-04-19 skia-flutter-autoroll@skia.org Roll Skia from 85d9e67653b1 to 8af1dd9659f0 (1 revision) (flutter/engine#41333)
2023-04-19 skia-flutter-autoroll@skia.org Roll Skia from 5a718d9e9c06 to 85d9e67653b1 (4 revisions) (flutter/engine#41330)
2023-04-19 skia-flutter-autoroll@skia.org Roll Dart SDK from 1f224df52bee to 27e71f19c144 (3 revisions) (flutter/engine#41329)

Also rolling transitive DEPS:
  fuchsia/sdk/core/linux-amd64 from Cy5LG4U2InaF to Tun7i4VLz6nc
  fuchsia/sdk/core/mac-amd64 from yD5a3QBJHUFM to suSuT9F8zuP-

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Refactor Flutter Gradle Plugin so it can be applied using the declarative `plugins {}` block (#123511)

This PR aims to resolve #121552.

Resources used:
- [Developing Plugins](https://docs.gradle.org/current/userguide/custom_plugins.html)
- [Using Gradle Plugins](https://docs.gradle.org/current/userguide/plugins.html#sec:plugins_block)
- [Composite Builds Plugin Development Sample](https://docs.gradle.org/current/samples/sample_composite_builds_plugin_development.html)

This PR also paves way for #121541, because apps will no longer have:

```groovy
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
```

hardcoded. Instead, they'll use:

```groovy
plugins {
    // ...
    id "dev.flutter.flutter-gradle-plugin" // the exact name is tentative
}
```

as title

## Pre-launch Checklist

- [ ] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [ ] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [ ] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [ ] I signed the [CLA].
- [ ] I listed at least one issue that this PR fixes in the description
above.
- [ ] I updated/added relevant documentation (doc comments with `///`).
- [ ] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [ ] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- Links -->
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[test-exempt]:
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Reverts flutter/flutter#124810

Fixes: https://github.com/flutter/flutter/issues/124808

https://github.com/flutter/engine/compare/8b7cdb02f7f3...609f9d536494

2023-04-19 bdero@google.com [Impeller] Add buffer-to-texture blit capability check; fix GL+VK playgrounds on macOS (flutter/engine#41320)

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https://github.com/flutter/engine/compare/099ed6c62d04...8b7cdb02f7f3

2023-04-19 aam@google.com Roll dart, zlib, emscripten, tweak license script for rolled zlib (flutter/engine#41299)
2023-04-19 skia-flutter-autoroll@skia.org Roll Skia from 84630c3c18b2 to 5a718d9e9c06 (3 revisions) (flutter/engine#41318)
2023-04-19 bdero@google.com [Impeller] Provide an opaque interface for color sources in Aiks (flutter/engine#41315)
2023-04-18 yjbanov@google.com [web:canvaskit] remove unnecessary instrumentation from picture (flutter/engine#41313)
2023-04-18 skia-flutter-autoroll@skia.org Roll Skia from 476ee3fd54cc to 84630c3c18b2 (5 revisions) (flutter/engine#41316)
2023-04-18 godofredoc@google.com Double zip FlutterMacOS.framework.zip. (flutter/engine#41306)

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https://github.com/flutter/engine/compare/5fcc7b719029...099ed6c62d04

2023-04-18 skia-flutter-autoroll@skia.org Roll Fuchsia Mac SDK from qZHSvkpAU1-YYGvYc... to yD5a3QBJHUFM4nVou... (flutter/engine#41314)
2023-04-18 yjbanov@google.com [web:canvaskit] clean up the rest of skia_object_cache usages (flutter/engine#41259)
2023-04-18 skia-flutter-autoroll@skia.org Roll Skia from f80ee1088861 to 476ee3fd54cc (2 revisions) (flutter/engine#41309)

Also rolling transitive DEPS:
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Fixes https://github.com/flutter/flutter/issues/124247

| Native | Flutter before | Flutter after |
| --- | --- | --- |
| <img width="248" alt="Screenshot 2023-04-05 at 9 26 16 AM" src="https://user-images.githubusercontent.com/389558/230177116-154999e8-eef3-441d-9fe9-7063839a6b99.png"> | <img width="240" alt="Screenshot 2023-04-05 at 11 18 01 AM" src="https://user-images.githubusercontent.com/389558/230177125-1680e851-223e-4956-b5b6-1a24e11dc22a.png"> | <img width="226" alt="Screenshot 2023-04-05 at 11 17 36 AM" src="https://user-images.githubusercontent.com/389558/230177123-bde82134-67e1-4ce2-8eec-719eeb779bf4.png"> |

Also, it's now possible for anyone to create disabled buttons like this by setting ContextMenuButtonItem.onPressed to `null`.

Fixes #102811. Adds an adaptive constructor to AlertDialog, along with the adaptive function showAdaptiveDialog.

<img width="357" alt="Screenshot 2023-04-06 at 10 40 18 AM" src="https://user-images.githubusercontent.com/58190796/230455412-31100922-cfc5-4252-b8c6-6f076353f29e.png">
<img width="350" alt="Screenshot 2023-04-06 at 10 42 50 AM" src="https://user-images.githubusercontent.com/58190796/230455454-363dd37e-c44e-4aca-b6a0-cfa1d959f606.png">

https://github.com/flutter/engine/compare/6d263ea56a62...5fcc7b719029

2023-04-18 dnfield@google.com [Impeller] Gpu model information to Skia gold (flutter/engine#41216)
2023-04-18 30870216+gaaclarke@users.noreply.github.com [Impeller] faster glyph atlas generation by removing data copies (flutter/engine#41290)
2023-04-18 godofredoc@google.com Migrate android AOT to engine_v2. (flutter/engine#41229)
2023-04-18 skia-flutter-autoroll@skia.org Roll Skia from 5bd4bdc0d8e2 to f80ee1088861 (8 revisions) (flutter/engine#41302)

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dart:js_interop and package:js will start conflicting, since they both have an `@JS` annotation. Until we're ready to only use dart:js_interop (which will require updating the SDK constraints of every package), we should hide the `@JS` annotation from dart:js_interop. Due to shadowing, this is the behavior today, so there should be no functional change.

Unblocks https://dart-review.googlesource.com/c/sdk/+/294130/8 and prevents confusing shadowing of dart:js_interop annotations like we do today.

- [Mentioned CL that is unblocked] I listed at least one issue that this PR fixes in the description above.
- [Need test-exemption] I added new tests to check the change I am making, or this PR is [test-exempt].
- [Need to run] All existing and new tests are passing.

Remove double.fromEnvironment from dart-define doc.

Fixes #124665 

The current dart-define docs reads:

```
Additional key-value pairs that will be available as constants from the String.fromEnvironment, bool.fromEnvironment, int.fromEnvironment, and
double.fromEnvironment constructors.
```
while dart-define-from-file reads:

```
The path of a json format file where flutter define a global constant pool. 
Json entry will be available as constants from the String.fromEnvironment, bool.fromEnvironment, int.fromEnvironment, 
and double.fromEnvironment constructors; the key and field are json values
```

<img width="1440" alt="Screenshot 2023-04-03 at 19 31 34" src="https://user-images.githubusercontent.com/31275429/229720102-2020e1a9-c1fb-470b-89e6-ffb84096a51b.png">

However, there is no fromEnvironment constructor for double. The aim of this PR is to address this by removing double.fromEnvironment from help docs as stated in

Adding my name (Kim Jiun) to Authors.

REF : https://github.com/flutter/flutter/pull/91496
Thanks!

## Description

This adds an optional argument to the `SubmenuButton` that allows the creator to supply a `MenuController` for controlling the menu.

## Related Issues
 - Fixes https://github.com/flutter/flutter/issues/124988

## Tests
 - Added tests for new argument.

https://github.com/flutter/engine/compare/879308a52228...6d263ea56a62

2023-04-18 gspencergoog@users.noreply.github.com Some minor doc typo and diagnostic fixes. (flutter/engine#40982)

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Fixes a bug where the spell check menu could overflow.

Remove TESTOWNERS matching the removed impeller tests in https://github.com/flutter/flutter/pull/125044.

Filed https://github.com/flutter/flutter/issues/125055 since I believe the mismatch should have been caught in that PR.

Fixes https://github.com/flutter/flutter/issues/124174
Fixes https://github.com/flutter/flutter/issues/124980

https://github.com/flutter/engine/compare/72b68622fffa...879308a52228

2023-04-18 30870216+gaaclarke@users.noreply.github.com [Impeller] Turned on wide gamut support by default. (flutter/engine#39801)

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These are currently unused and will not work in a multi-view environment where we will have multiple render trees.

Work towards https://github.com/flutter/flutter/issues/121573.

Currently, nullable-getter defaults to false when l10n.yaml is not present, which is not the same behavior as when an l10n.yaml file is present and nullable-getter is not set.

Fixes #120457.

https://github.com/flutter/engine/compare/55bb065c607b...72b68622fffa

2023-04-18 skia-flutter-autoroll@skia.org Manual roll Skia from d9e216e62223 to 5bd4bdc0d8e2 (12 revisions) (flutter/engine#41286)

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https://github.com/flutter/flutter/issues/120408

Fixes https://github.com/flutter/flutter/issues/125049

This is blocking the dart roll, dart fix will now fix some invalid code that was in these test cases. These test case files are un-analyzed intentionally because they are by nature samples of broken code.

## Description

This updates the copy icon for copying sample code to use `content_copy` instead of `assignment`.
Before:
<img width="369" alt="223876418-2470c4c5-abfc-4511-9762-1fd0b6e05903" src="https://user-images.githubusercontent.com/8867023/228396142-450125ee-d8cf-4ede-8545-5920eb0da99d.png">

After:
<img width="408" alt="image" src="https://user-images.githubusercontent.com/8867023/228395959-8531704a-77aa-43af-9dcf-7456bb2ed090.png">

## Related Issues
 - Fixes https://github.com/flutter/flutter/issues/122246

## Tests
 - No tests needed.

Tidying up the spell check API.

Fixes the cursor location after selecting a spell check result on iOS.