* Modify the updateChildren method deep copy _children

* add test

* fix some small nits

* Simplified newChildren declaration in updateChildren

This reverts commit 2df140f4.

6e92c0c28 Roll Fuchsia Mac SDK from xl9Y8o-9FDyvPogki... to haDvcC5VzWVdQs9Rs... (flutter/engine#39700) (#120950)

52a4fb4c5 Roll Skia from b1800a8b9595 to d0df677ffd5e (13 revisions) (flutter/engine#39699) (#120947)

The `Linux docs_test` target has timed out repeatedly. This is a short-term mitigation to prevent unnecessary framework tree closures. In the future we should remove docset generation from post-submit `Linux docs_test`. See: https://github.com/flutter/flutter/issues/120901.

See this similar change: https://github.com/flutter/flutter/pull/120718

* 7cf63a03f [Impeller] use IPSampleDecal in advanced blends. (flutter/engine#39523)

* 9da851557 Remove extraneous if (flutter/engine#39683)

* 6602fc753 [macOS] Implement platform view mutators (flutter/engine#38699)

* 9ee3221d0 [Impeller] align SSBOs to 16 bytes to fix iOS shader validation issue. (flutter/engine#39654)

* 65a79237f Roll Dart SDK from 09361aea2ca8 to 3ec7f1f92216 (1 revision) (flutter/engine#39686)

* e213d1c5c Uses `int64_t` instead of `int` for the |view_id| parameter. (flutter/engine#39618)

* 94e33ae50 test (flutter/engine#39630)

* bddfc1c4d [Impeller] Match position attribute name across runtime effect stages (flutter/engine#39552)

Fixes #120341.

The scroll protocol makes an important assumption about the behavior
of ScrollPhysics implementations, and this requirement hasn't been
clearly documented.  Add documentation for it.

Parts of the text are modelled on similar language at
StatelessWidget.build and StatefulWidget.build.

It does feel a bit uncomfortable to juxtapose this description of a
required invariant with three issues where the framework doesn't
satisfy it.  Fortunately two of them apply by default only in
uncommon cases: #120340 macOS touchpad flinging, and #109675 never.

The third is #120338, affecting default scrolling on Android and
other non-Apple platforms.  I'll send a PR to fix that shortly,
and another for #109675.

As discussed at #120338, it's quite possible we'll remove this
invariant in the future.  But that's been attempted before, and is
complicated: the invariant is a useful one.  Removing it would almost
certainly involve a breaking change for ScrollPhysics subclasses.  So
I think even if we had an immediate plan to remove it, we'd need some
kind of documentation for it, if only to explain the breaking change.

* Fix binary path

* Enable in presubmit

* bb786316b Roll Skia from 10c9e3b2185f to b1800a8b9595 (9 revisions) (flutter/engine#39684)

* 4a90fbcd6 Delete dead statusBarPadding iOS code (flutter/engine#39682)

* 3be7ed4c2 Enable the same tests in linux host for v2 and legacy recipes. (flutter/engine#39635)

* e4cb80e22 Roll Skia from f2c67bb88bc6 to 10c9e3b2185f (2 revisions) (flutter/engine#39680)

* migrate to integration_test framework

* Update embedding

Sometimes when the integration tests run Flutter apps they get this output (perhaps based on timing of file modification times). Some of the tests want to verify strict output but not fail just based on these lines before the app starts.

See https://github.com/flutter/flutter/issues/120015 / https://github.com/flutter/flutter/pull/120016.

2be7253c9 Roll Fuchsia Linux SDK from q7u2WyX2BSRBIzyTW... to yT4JLKTCWWwbRwB0l... (flutter/engine#39679) (#120898)

* 98dd386db Roll Dart SDK from ce9397c5fc8f to 09361aea2ca8 (3 revisions) (flutter/engine#39678)

* 0d8d93306 Roll Skia from 7b3fb04bc3d4 to f2c67bb88bc6 (1 revision) (flutter/engine#39677)

d699b4a91 Roll Flutter from e3471f08 to df41e58f (83 revisions) (flutter/plugins#7184) (#120888)

c8b1d2ffa Roll Fuchsia Mac SDK from YpQKlqmyn8r_snx06... to xl9Y8o-9FDyvPogki... (flutter/engine#39675) (#120887)

ea1d087c4 Roll Skia from b8b36146c7a0 to 7b3fb04bc3d4 (3 revisions) (flutter/engine#39673) (#120860)

* d90898798 Roll Skia from bb3d8185f067 to f24059cf165a (4 revisions) (flutter/engine#39670)

* 9fa2a5c3c Roll Skia from f24059cf165a to b8b36146c7a0 (2 revisions) (flutter/engine#39671)

* b7ec9ce18 [macOS] Improve TextInputPlugin test readability (flutter/engine#39664)

* a6e8fb134 Roll Dart SDK from a594e34e85b6 to ce9397c5fc8f (1 revision) (flutter/engine#39667)

* 3fc40ca5b ++ (flutter/engine#39617)

* fd3ee0893 Roll Fuchsia Linux SDK from ejOvPyZ4UL2DoQhn6... to q7u2WyX2BSRBIzyTW... (flutter/engine#39663)

* a966cf878 Roll Fuchsia Mac SDK from jsnm3dngrd9MveHrB... to YpQKlqmyn8r_snx06... (flutter/engine#39665)

* b310be5ce Revert "Revert "Add support for double tap action from Apple Pencil 2 (#39267)" (#39607)" (flutter/engine#39637)

* 7c24f2ff3 Roll Dart SDK from 5d17a336bdfe to a594e34e85b6 (1 revision) (flutter/engine#39656)

* fa1b2dd40 Roll Skia from 21627ff455d0 to bb3d8185f067 (13 revisions) (flutter/engine#39661)

* 02a379db1 [web] consolidate network code into httpFetch (flutter/engine#39657)

* Fix overscroll behaviour of `StretchingOverscrollIndicator` on directional change while scrolling

* Remove trailing spaces

* Change naming of `_StretchDirection` values to `trailing` and `leading`

* Remove trailing space

* Apply suggestions from code review

* Fix stretching overscroll indicator direction on fling

* Fix issue when changing direction while recede animation is playing

* Remove trailing space

* Add test for changing direction during recede animation

Use the NoProfile parameter of `pwsh.exe`/`PowerShell.exe` to start PowerShell without a profile to avoid executing the scripts in the user profile

9f3b061b7 Roll buildroot to 64b0c3deecaff8e66c2deb74e2171e8297b2bfcd (flutter/engine#39653) (#120830)

* Add Linux unit tests to plugin template

Adds an example native unit test to the plugin template for Linux,
matching the structure we use for our 1P plugin unit tests. Once these
have been added for all platforms+languages, they will be documented on
a new plugin development page to explain their use.

While ideally we would adjust the engine APIs first to allow for testing
the method call handler directly, it's unclear when we will have time
for that work, and for a complex plugin most of the testing wouldn't be
at that layer anyway, so having the structure in place with the
limitations documented is still a significant improvement over having
nothing in the template.

Part of https://github.com/flutter/flutter/issues/82458

* Add creation test

* Add integration tests

* Missing newlines

* test owner

* Typo

* Add `@widgetFactory` annotation

* Simplify and fix example

* Specify `TargetKind`s for `widgetFactory`

* Explain why `library_private_types_in_public_api` is ignored.

* Trigger CI

* wip run_local_linter.dart

* get run_local_linter.dart working

* slow working implementation

* speed up run_local_linter.dart

* fix run_local_linter.dart

* remove catchError

* another fix

* fix another

* fix

* more fixes

* fix moar

* fix moar

* fix

* finish

* fix tests

* clean up further

* code review

* delete run_local_linter.dart

* b59787f40 Roll Skia from cd19d680b078 to 21627ff455d0 (2 revisions) (flutter/engine#39650)

* 9af56b3ee [macOS] Set textfield autofill type (flutter/engine#39632)

* a8b3d1af5 Added wide gamut colors to offscreen buffers (flutter/engine#39482)

* Added wide gamut integration test that uses save layers.

* updated the test to support bgra too

* analysis errors

* switched blend mode to multiply to avoid future optimizations