https://github.com/flutter/engine/compare/76e5e35ab395...88aad1056781

2023-09-21 skia-flutter-autoroll@skia.org Roll Skia from a7bcbb9a39f3 to 81b9c7fd19b2 (1 revision) (flutter/engine#46129)

If this roll has caused a breakage, revert this CL and stop the roller
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Please CC jonahwilliams@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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https://github.com/flutter/engine/compare/89d864552acd...76e5e35ab395

2023-09-21 matanlurey@users.noreply.github.com Tidy up `DlPaint` and friends. (flutter/engine#46120)
2023-09-21 skia-flutter-autoroll@skia.org Roll Skia from 86f48da2c812 to a7bcbb9a39f3 (1 revision) (flutter/engine#46128)
2023-09-21 30870216+gaaclarke@users.noreply.github.com [Impeller] removed global mutable variable for tessellation allocation function pointers (flutter/engine#46127)
2023-09-20 jonahwilliams@google.com [Impeller] Remove removal of save layer from clip. (flutter/engine#46113)
2023-09-20 jason-simmons@users.noreply.github.com [Impeller] Apply the entity transformation when rendering FramebufferBlendContents (flutter/engine#46106)
2023-09-20 matanlurey@users.noreply.github.com Clang tidy-ify `DlColor` and friends. (flutter/engine#46122)
2023-09-20 godofredoc@google.com Apply the right tag for linux fuchsia cipd packages. (flutter/engine#46123)
2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from b78c91996051 to 86f48da2c812 (4 revisions) (flutter/engine#46121)
2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from d923bab3d5fa to b78c91996051 (4 revisions) (flutter/engine#46119)
2023-09-20 matanlurey@users.noreply.github.com Make `dl_color_(filter|source)` tidy. (flutter/engine#46111)
2023-09-20 matanlurey@users.noreply.github.com Make `dl_(image|mask|path)_(filter|effect).h` tidy! (flutter/engine#46110)
2023-09-20 matanlurey@users.noreply.github.com Migrate from `LOG_X` to `kLogX`. (flutter/engine#46107)
2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from b3c1f49821d8 to d923bab3d5fa (2 revisions) (flutter/engine#46118)
2023-09-20 matanlurey@users.noreply.github.com Make a variety of low-impact Clang tidy fixes in Impeller. (flutter/engine#46116)
2023-09-20 ychris@google.com [ios] fix asset url not found when loading app extension (flutter/engine#46073)
2023-09-20 matanlurey@users.noreply.github.com Make a variety of low-impact Clang tidy fixes. (flutter/engine#46114)
2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from c19115e8f712 to b3c1f49821d8 (3 revisions) (flutter/engine#46112)
2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from f4238844089f to c19115e8f712 (5 revisions) (flutter/engine#46108)
2023-09-20 mdebbar@google.com [web] Move context menu handling to its own class (flutter/engine#46042)
2023-09-20 matanlurey@users.noreply.github.com Delete `ci/lint.sh`, which is no longer used. (flutter/engine#46049)
2023-09-20 mdebbar@google.com [web] Make `PlatformViewManager` a clear singleton (flutter/engine#46044)

If this roll has caused a breakage, revert this CL and stop the roller
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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When it comes to startup profiling, it is very helpful to look at platform channels. `debugProfilePlatformChannels` today only works in debug and profile mode. Unfortunately, using profile mode is less accurate for startup profiling, because of the service isolate introducing additional overhead.

This PR allows this toggle to work in release mode. Note that there are two parts to `debugProfilePlatformChannels`:

- Adding timeline events
- Logging statistics about platform channels

I also considered adding a separate toggle to limit the scope of this change to the former, but that seems like complexity that we might not need at this time.

Towards #102189

https://github.com/flutter/engine/compare/39c0f2ea1f53...89d864552acd

2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from 565d95f72f2e to f4238844089f (3 revisions) (flutter/engine#46105)
2023-09-20 skia-flutter-autoroll@skia.org Roll Dart SDK from ed05ca364d5e to d5d05146868a (1 revision) (flutter/engine#46104)
2023-09-20 skia-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from aHtib4LBcLwx7JwK-... to QcxgV9KlY7j3o3b4j... (flutter/engine#46102)
2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from 9bc5eeb93a1e to 565d95f72f2e (1 revision) (flutter/engine#46100)

Also rolling transitive DEPS:
  fuchsia/sdk/core/linux-amd64 from aHtib4LBcLwx to QcxgV9KlY7j3

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
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Please CC jonahwilliams@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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This PR is the result of running:

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

### Issues

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

Log the details of how Chromium is about to be launched prior to running
the Chromium command, as well as the path to the Chromium executable.

This should improve our understanding of what's happening here:
https://github.com/flutter/flutter/issues/132654#issuecomment-1726630123

Related to https://github.com/flutter/flutter/issues/134419

Avoids that dynamic accidentally sneaks in, see https://dart.dev/tools/analysis#enabling-additional-type-checks

Update the conductor to code sign extension safe iOS frameworks
The new frameworks are added in
https://github.com/flutter/engine/pull/45781/files

part of https://github.com/flutter/flutter/issues/124291

Also includes an Engine roll includes:

https://github.com/flutter/engine/commit/9232e76c30455ee1c0c1584001bdbb01000f8212

https://github.com/flutter/engine/commit/39c0f2ea1f536eb7dc057d9147f23e3fec4a56c9

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] 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].
- [x] All existing and new tests are passing.

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

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#overview
[Tree Hygiene]: https://github.com/flutter/flutter/wiki/Tree-hygiene
[test-exempt]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#handling-breaking-changes
[Discord]: https://github.com/flutter/flutter/wiki/Chat

https://github.com/flutter/engine/compare/6f256257b79f...55314d08d792

2023-09-20 skia-flutter-autoroll@skia.org Roll Fuchsia Mac SDK from kGkqpvcPI1TGmR4Sc... to zuOP7YCHHocXuZJcD... (flutter/engine#46097)
2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from 56ce5bb201c6 to f54c214a739b (4 revisions) (flutter/engine#46098)

Also rolling transitive DEPS:
  fuchsia/sdk/core/mac-amd64 from kGkqpvcPI1TG to zuOP7YCHHocX

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC jonahwilliams@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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## Description

This removes all of the comments that are of the form "so-and-so (must not be null|can ?not be null|must be non-null)" from the cases where those values are defines as non-nullable values.

This PR removes them from the widgets library.

This was done by hand, since it really didn't lend itself to scripting, so it needs to be more than just spot-checked, I think. I was careful to leave any comment that referred to parameters that were nullable, but I may have missed some.

In addition to being no longer relevant after null safety has been made the default, these comments were largely fragile, in that it was easy for them to get out of date, and not be accurate anymore anyhow.

This did create a number of constructor comments which basically say "Creates a [Foo].", but I don't really know how to avoid that in a large scale change, since there's not much you can really say in a lot of cases.  I think we might consider some leniency for constructors to the "Comment must be meaningful" style guidance (which we de facto have already, since there are a bunch of these).

## Related PRs
- https://github.com/flutter/flutter/pull/134984
- https://github.com/flutter/flutter/pull/134991
- https://github.com/flutter/flutter/pull/134993
- https://github.com/flutter/flutter/pull/134994

## Tests
 - Documentation only change.

https://github.com/flutter/engine/compare/5f82fc2f6f24...6f256257b79f

2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from fd317812bd27 to 56ce5bb201c6 (4 revisions) (flutter/engine#46096)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC jonahwilliams@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
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Documentation for the AutoRoller is here:
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Adds warning to `flutter create` command that checks if detected Java version is compatible with the template AGP and template Gradle versions. If a developer is building for Android and their Java version is incompatible with either the AGP or Gradle versions that Flutter currently supports by default for new Flutter projects, then

- a warning will show noting the incompatibility and
- steps will be shown to fix the issue, the recommended option being to configure a new compatible Java version given that Flutter knows we can support the template Gradle/AGP versions and updating them manually may be risky (feedback on this approach would be greatly appreciated!)

Given that the template AGP and Gradle versions are compatible, this PR assumes that the detected Java version may only conflict with one of the template AGP or Gradle versions because:
 - the minimum Java version for a given AGP version is less than the maximum Java version compatible for the minimum Gradle version required for that AGP version (too low a Java version will fail AGP compatibility test, but not Gradle compatibility).
- the maximum Java version compatible with minimum Gradle version for a given AGP version is higher than minimum Java version required for that AGP version (too high a Java version will fail Gradle compatibility test, but not AGP compatibility test).

Fixes https://github.com/flutter/flutter/issues/130515 in the sense that `flutter create foo`; `cd foo`; `flutter run` should always be successful.

https://github.com/flutter/packages/compare/d4e245421737...51e74b97508a

2023-09-19 stuartmorgan@google.com [ios_platform_images] Convert to Pigeon (flutter/packages#4945)
2023-09-19 abdeluached@gmail.com [go_router_builder] Generate initialLocation with StatefulShellBranchConfig (flutter/packages#4880)
2023-09-19 engine-flutter-autoroll@skia.org Roll Flutter from b7d0e8c9 to 89365041 (15 revisions) (flutter/packages#4947)
2023-09-18 47866232+chunhtai@users.noreply.github.com [go_router] Adds on exit (flutter/packages#4699)
2023-09-18 47866232+chunhtai@users.noreply.github.com [go_router] Fixes RouteInformationParser that does not restore full RouteMatchList if the optionURLReflectsImperativeAPIs is set (flutter/packages#4713)
2023-09-18 stuartmorgan@google.com [file_selector] Fix unknown extensions on macOS (flutter/packages#4946)
2023-09-18 30872003+misos1@users.noreply.github.com [camera_avfoundation] ignore audio samples until first video sample (flutter/packages#4587)
2023-09-18 engine-flutter-autoroll@skia.org Roll Flutter from 1b18b132 to b7d0e8c9 (11 revisions) (flutter/packages#4944)
2023-09-18 tarrinneal@gmail.com [video_player] isCompleted event. (flutter/packages#4923)
2023-09-18 32538273+ValentinVignal@users.noreply.github.com [go_router] Fix an issue in the documentation that used `state.queryParameters` instead of `state.uri.queryParameters` (flutter/packages#4881)
2023-09-18 stuartmorgan@google.com [google_sign_in] Convert iOS to Pigeon (flutter/packages#4941)
2023-09-18 stuartmorgan@google.com Add dashboard link to README (flutter/packages#4902)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-packages-flutter-autoroll
Please CC flutter-ecosystem@google.com,rmistry@google.com on the revert to ensure that a human
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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## Description

This removes all of the comments that are of the form "so-and-so (must not be null|can ?not be null|must be non-null)" from the cases where those values are defines as non-nullable values.

This PR removes them from the animation, cupertino, foundation, gestures, semantics, and services libraries.  Each of them only had a few, so I lumped them together.

This was done by hand, since it really didn't lend itself to scripting, so it needs to be more than just spot-checked, I think. I was careful to leave any comment that referred to parameters that were nullable, but I may have missed some.

In addition to being no longer relevant after null safety has been made the default, these comments were largely fragile, in that it was easy for them to get out of date, and not be accurate anymore anyhow.

This did create a number of constructor comments which basically say "Creates a [Foo].", but I don't really know how to avoid that in a large scale change, since there's not much you can really say in a lot of cases.  I think we might consider some leniency for constructors to the "Comment must be meaningful" style guidance (which we de facto have already, since there are a bunch of these).

## Related PRs
- https://github.com/flutter/flutter/pull/134991
- https://github.com/flutter/flutter/pull/134992
- https://github.com/flutter/flutter/pull/134993
- https://github.com/flutter/flutter/pull/134994

## Tests
 - Documentation only change.

https://github.com/flutter/engine/compare/6535421b30d3...5f82fc2f6f24

2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from d7f2d1083979 to fd317812bd27 (2 revisions) (flutter/engine#46094)
2023-09-20 skia-flutter-autoroll@skia.org Roll Dart SDK from b3fd178ce59f to ed05ca364d5e (1 revision) (flutter/engine#46093)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
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Please CC jonahwilliams@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
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Documentation for the AutoRoller is here:
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https://github.com/flutter/engine/compare/67d4aaef3c7b...6535421b30d3

2023-09-20 skia-flutter-autoroll@skia.org Roll Dart SDK from b3fd178ce59f to ed05ca364d5e (1 revision) (flutter/engine#46092)

If this roll has caused a breakage, revert this CL and stop the roller
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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https://github.com/flutter/engine/compare/83b4df415bf3...67d4aaef3c7b

2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from 7d9d5ac84d8f to d7f2d1083979 (1 revision) (flutter/engine#46091)

If this roll has caused a breakage, revert this CL and stop the roller
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Please CC jonahwilliams@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
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https://github.com/flutter/engine/compare/df4e6c079682...83b4df415bf3

2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from 14e9b3c91c64 to 7d9d5ac84d8f (1 revision) (flutter/engine#46090)
2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from e3aa86332255 to 14e9b3c91c64 (1 revision) (flutter/engine#46089)

If this roll has caused a breakage, revert this CL and stop the roller
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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https://github.com/flutter/engine/compare/9c6b2500282b...df4e6c079682

2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from e9b9e9a4f541 to e3aa86332255 (1 revision) (flutter/engine#46088)

If this roll has caused a breakage, revert this CL and stop the roller
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Please CC jonahwilliams@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
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https://github.com/flutter/engine/compare/24f7ac38dfa2...9c6b2500282b

2023-09-20 skia-flutter-autoroll@skia.org Roll Dart SDK from b8f006d88c07 to b3fd178ce59f (3 revisions) (flutter/engine#46087)
2023-09-20 bdero@google.com [Impeller] Ensure that reused textures are cleared before getting sampled by backdrop textures (flutter/engine#46084)
2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from d6325ec2f053 to e9b9e9a4f541 (1 revision) (flutter/engine#46086)

If this roll has caused a breakage, revert this CL and stop the roller
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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https://github.com/flutter/engine/compare/36379b62bec8...24f7ac38dfa2

2023-09-20 bdero@google.com [Impeller] Use BlackTransparent clear color when backdrop filters are present. (flutter/engine#46085)
2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from 5d916c04e9fc to d6325ec2f053 (1 revision) (flutter/engine#46083)

If this roll has caused a breakage, revert this CL and stop the roller
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
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https://github.com/flutter/engine/compare/81b93fc4a2cc...36379b62bec8

2023-09-20 skia-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from ZhY53WD7bFJSA3xoO... to aHtib4LBcLwx7JwK-... (flutter/engine#46082)
2023-09-20 skia-flutter-autoroll@skia.org Roll Skia from 1a8885b9e03c to 5d916c04e9fc (6 revisions) (flutter/engine#46081)

Also rolling transitive DEPS:
  fuchsia/sdk/core/linux-amd64 from ZhY53WD7bFJS to aHtib4LBcLwx

If this roll has caused a breakage, revert this CL and stop the roller
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

https://github.com/flutter/engine/compare/5a924a9017d7...81b93fc4a2cc

2023-09-20 skia-flutter-autoroll@skia.org Roll Fuchsia Mac SDK from 06g6i7-5u8O-FOTSi... to kGkqpvcPI1TGmR4Sc... (flutter/engine#46079)
2023-09-20 godofredoc@google.com Use magic envs to pass commit and temp folder. (flutter/engine#46015)

Also rolling transitive DEPS:
  fuchsia/sdk/core/mac-amd64 from 06g6i7-5u8O- to kGkqpvcPI1TG

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC jonahwilliams@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

## Description

This removes all of the comments that are of the form "so-and-so (must not be null|can ?not be null|must be non-null)" from the cases where those values are defines as non-nullable values.

This PR removes them from the material library.

This was done by hand, since it really didn't lend itself to scripting, so it needs to be more than just spot-checked, I think. I was careful to leave any comment that referred to parameters that were nullable, but I may have missed some.

In addition to being no longer relevant after null safety has been made the default, these comments were largely fragile, in that it was easy for them to get out of date, and not be accurate anymore anyhow.

This did create a number of constructor comments which basically say "Creates a [Foo].", but I don't really know how to avoid that in a large scale change, since there's not much you can really say in a lot of cases.  I think we might consider some leniency for constructors to the "Comment must be meaningful" style guidance (which we de facto have already, since there are a bunch of these).

## Related PRs
- https://github.com/flutter/flutter/pull/134984
- https://github.com/flutter/flutter/pull/134992
- https://github.com/flutter/flutter/pull/134993
- https://github.com/flutter/flutter/pull/134994

## Tests
 - Documentation only change.

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

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

https://github.com/flutter/engine/compare/a7af55c56aa6...5a924a9017d7

2023-09-19 chinmaygarde@google.com [Impeller] Fix validation error about incorrect aspect on buffer to texture copies. (flutter/engine#46078)
2023-09-19 jonahwilliams@google.com [Impeller] Affinity adjustments for Vulkan backend. (flutter/engine#46063)
2023-09-19 chinmaygarde@google.com [Impeller] Fix validation errors in RendererTest. (flutter/engine#46076)
2023-09-19 skia-flutter-autoroll@skia.org Roll Skia from fe3568162721 to 1a8885b9e03c (6 revisions) (flutter/engine#46075)
2023-09-19 30870216+gaaclarke@users.noreply.github.com [Impeller] adds hardware gate for wide gamut (flutter/engine#46051)
2023-09-19 jacksongardner@google.com Properly transfer objects between the main thread and web worker. (flutter/engine#46061)
2023-09-19 30870216+gaaclarke@users.noreply.github.com Made the warning about downgrading wide gamut happen at the correct time (flutter/engine#46064)
2023-09-19 matanlurey@users.noreply.github.com Conform to clang_tidy in `client_wrapper` headers. (flutter/engine#46058)
2023-09-19 30870216+gaaclarke@users.noreply.github.com [Impeller] Adds unit test to make sure we can encode bgr101010xr to png. (flutter/engine#46007)
2023-09-19 ychris@google.com [ios] scenario test make parent view controller hide status bar (flutter/engine#46065)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC jonahwilliams@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Manual roll requested by zra@google.com

https://github.com/flutter/engine/compare/a7af55c56aa6...0d7db40c27fd

2023-09-19 skia-flutter-autoroll@skia.org Roll Skia from fe3568162721 to
1a8885b9e03c (6 revisions) (flutter/engine#46075)
2023-09-19 30870216+gaaclarke@users.noreply.github.com [Impeller] adds
hardware gate for wide gamut (flutter/engine#46051)
2023-09-19 jacksongardner@google.com Properly transfer objects between
the main thread and web worker. (flutter/engine#46061)
2023-09-19 30870216+gaaclarke@users.noreply.github.com Made the warning
about downgrading wide gamut happen at the correct time
(flutter/engine#46064)
2023-09-19 matanlurey@users.noreply.github.com Conform to clang_tidy in
`client_wrapper` headers. (flutter/engine#46058)
2023-09-19 30870216+gaaclarke@users.noreply.github.com [Impeller] Adds
unit test to make sure we can encode bgr101010xr to png.
(flutter/engine#46007)
2023-09-19 ychris@google.com [ios] scenario test make parent view
controller hide status bar (flutter/engine#46065)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC jonahwilliams@google.com,rmistry@google.com,zra@google.com on
the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter:
https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

## Description

This removes all of the comments that are of the form "so-and-so (must not be null|can ?not be null|must be non-null)" from the cases where those values are defines as non-nullable values.

This PR removes them from the painting and rendering libraries.

This was done by hand, since it really didn't lend itself to scripting, so it needs to be more than just spot-checked, I think. I was careful to leave any comment that referred to parameters that were nullable, but I may have missed some.

In addition to being no longer relevant after null safety has been made the default, these comments were largely fragile, in that it was easy for them to get out of date, and not be accurate anymore anyhow.

This did create a number of constructor comments which basically say "Creates a [Foo].", but I don't really know how to avoid that in a large scale change, since there's not much you can really say in a lot of cases.  I think we might consider some leniency for constructors to the "Comment must be meaningful" style guidance (which we de facto have already, since there are a bunch of these).

## Related PRs
- https://github.com/flutter/flutter/pull/134984
- https://github.com/flutter/flutter/pull/134991
- https://github.com/flutter/flutter/pull/134992
- https://github.com/flutter/flutter/pull/134994

## Tests
 - Documentation only change.