https://github.com/flutter/engine/compare/8dc3a4cde207...4c4c0f82825d

git log 8dc3a4cde2075a4f5458fd0eb199627f5124508d..4c4c0f82825d9aee5aa208da32c9d3cfbd5157e8 --no-merges --oneline
4c4c0f828 Add plugin shim to facilitate old plugins in new embedding (#33478). (flutter/engine#9120)
e8c2b1787 Added support for transparent FlutterActivitys (#32740). (flutter/engine#9115)
19c5029b9 Roll src/third_party/skia 29e013deb476..1013ecfb3421 (3 commits) (flutter/engine#9130)
45d39e137 Revert "Roll src/third_party/dart fee615c5a5..d5405d06f4 (21 commits) (#9127)" (flutter/engine#9135)
44f1b440a Revert "Use track-widget-creation transformer included in the sdk. (#9085)" (flutter/engine#9134)
ae14c5a24 Roll src/third_party/dart fee615c5a5..d5405d06f4 (21 commits) (flutter/engine#9127)
3ea7ac8d9 Roll src/third_party/skia 633db4db7672..29e013deb476 (3 commits) (flutter/engine#9128)
8ad0e2f8e Roll src/third_party/skia 25b63f91b3b4..633db4db7672 (4 commits) (flutter/engine#9125)
37e6e0c90 Roll src/third_party/skia 8f88b2da05d5..25b63f91b3b4 (2 commits) (flutter/engine#9121)
37b367e4d Allow specifying both Dart and non-Dart fixtures in engine unit-tests. (flutter/engine#9113)
28f2c05a6 Roll src/third_party/skia 1f02e8488551..8f88b2da05d5 (3 commits) (flutter/engine#9116)
093200848 Remove outdated TODOs (flutter/engine#9114)
c880ca215 Roll src/third_party/dart 50b0d85804..fee615c5a5 (4 commits)
6e5151359 Removing unused imports (flutter/engine#9108)
9ee269721 Roll src/third_party/skia d04aaa3a841a..1f02e8488551 (8 commits) (flutter/engine#9109)
fa2e2d9fc Add checks to constructors and add missing constructor members (flutter/engine#9106)
7e1788acd Fix unopt variants of profile and release builds. (flutter/engine#9107)
867120c0c Better help message. (flutter/engine#9097)
e27c6e890 Forward custom IDE flags to GN. (flutter/engine#9023)
6b4ca8da5 Roll src/third_party/skia 176b214f91bc..d04aaa3a841a (7 commits) (flutter/engine#9105)
a20731870 Roll src/third_party/dart ec4d48e241..50b0d85804 (87 commits)
0a6aeb347 Roll src/third_party/skia 213aa46af167..176b214f91bc (2 commits) (flutter/engine#9100)
f2e22aa3c Roll src/third_party/skia 7730d7cb8fb2..213aa46af167 (3 commits) (flutter/engine#9098)
557db42ad Roll src/third_party/skia de7e074e8190..7730d7cb8fb2 (2 commits) (flutter/engine#9096)
64a4a0eaa Roll src/third_party/skia f06b6d5469a5..de7e074e8190 (1 commits) (flutter/engine#9094)
fdee6256a Roll src/third_party/skia 7e5a64f517e4..f06b6d5469a5 (2 commits) (flutter/engine#9093)
daf47f0b4 Roll src/third_party/skia dc01a84ae098..7e5a64f517e4 (1 commits) (flutter/engine#9092)
41e10f07f Fix internal break since listing contents can return null (flutter/engine#9078)
cf1b20318 Roll src/third_party/skia f33c95cd6f55..dc01a84ae098 (3 commits) (flutter/engine#9091)
2404cdc90 Rename macOS FLEPlugin* to FlutterPlugin* (flutter/engine#9074)
509a43fe2 Apply minor cleanups to Android embedding (flutter/engine#9088)
0a0f3305b Removed outdated deprecation comments (flutter/engine#9087)
a44cbbf49 Delete BSDiff sources (flutter/engine#9086)
0f1ff3bdb Correct typos, adopt US spellings (flutter/engine#9081)
651c90409 Use track-widget-creation transformer included in the sdk. (flutter/engine#9085)
cfa524fcd New Plugin API PR4: Adds Lifecycle support to the new plugin system. (flutter/engine#9049)
6b8ac18b8 Roll src/third_party/skia d9430297e74a..f33c95cd6f55 (5 commits) (flutter/engine#9082)
11408effd Update macOS podspec version requirement (flutter/engine#9077)
66c6ae48e Roll src/third_party/skia a4b837971c4b..d9430297e74a (30 commits) (flutter/engine#9080)
9151b377e Roll src/third_party/skia 9339a8a61af0..a4b837971c4b (34 commits) (flutter/engine#9076)
ee6a9c404 Fix unchecked operation warnings in FlutterMain (flutter/engine#9073)
333042cf3 Roll third_party/dart/tools/sdks to 2.3.0 (flutter/engine#9072)
01b8c078c Roll src/third_party/skia f77dbd04b926..9339a8a61af0 (12 commits) (flutter/engine#9065)
26b4fb57f Roll src/third_party/dart e3edfd36b2..ec4d48e241 (7 commits)
9d2d58a3c Add mouse button support to the macOS shell (flutter/engine#9054)
...

This relands flutter/flutter#33163 with a fix to the integration_ui test.

- Fixed extentInside calculation in ScrollMetrics
- Added asserts to extentInside getter, as well as ScrollPosition.applyContentDimensions to enforce minScrollExtent <= maxScrollExtent
- Added padding to ScrollbarPainter, updated implementation. Took care of some edge cases.
- Changed some scroll bar constants on Cupertino side.

Fixed an issue with a DropdownButton crashing when a style was used that didn't include a fontSize.

Switch from building Runner.vcxproj to Runner.sln on Windows, to allow
for multiple-project builds (e.g., separate plugin projects).

This adds two new builders to the `Image` class:

* `frameBuilder`, which allows callers to control the widget
  created by an [Image].
* `loadingBuilder`, which allows callers fine-grained control
  over how to display loading progress of an image to the user.

`FadeInImage` can be simplified by migrating to the new API.
This is done in a follow-on commit.

https://github.com/flutter/flutter/issues/32374

This reverts commit 52ae9968.

Rather than hard-coding a set of locations to check, use vswhere (which
is installed by VS 2017 and later), and construct the vcvars64.bat path
relative to that. This will allow Windows builds to work without special
configuration for people who have VS installed at a custom path.

Also adds error logging with different messages for each failure point,
so that rather than the not-very-informative 'failed to find
vcvars64.bat' message, the failure will provide feedback about what to
do.

This is an interim solution; later this will be replaced by a
VisualStudio class with associated validator to match the structure of
the other toolchains.

Fixes #33249

Invoking msbuild with runInShell makes handling path escaping more
error-prone, and substantially increases the chances of running into
maximum path limits. This replaces the direct call with a .bat wrapper
that calls vsvars64.bat then msbuild, and uses relative paths within the
script to keep command lengths short.

Fixes https://github.com/flutter/flutter/issues/32792

This will fix a failure in dev/bots/analyze-sample-code.dart when using
the tip of tree Dart SDK.

This reverts commit faec4ca3.

This reverts commit 841286d6.

* Deprecates `BinaryMessages` in favor of a default instance of `BinaryMessenger`, called `defaultBinaryMessenger`
* Platform channels use the `defaultBinaryMessenger` for their binaryMessenger default argument.

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

Replacing the algorithm for finding the first focusable item in the focus tree. Somehow it was a kind of gibberish before, and really didn't work or make sense.

Co-authored-by: Miguel Lemos <miguelslemos@gmail.com>

* Adding sample and animation for Flow widget

* Updated dart templates for layout in API docs

* Updated the sample code for a clearer example.

* make clean

This also fixes up some indentation in some
bulleted lists.

https://github.com/dart-lang/dartdoc/issues/1969

Splits Xcode validation out of the iOS validator and into a stand-alone
validator, and groups the CocoaPods validator with that top-level
validator instead of the iOS validator. iOS now validates only the
iOS-specific tools (e.g., ideviceinstaller).

Reorganizes many of the associated clases so that those that are used by
both macOS and iOS live in macos/ rather than ios/. Moves some
validators to their own files as part of the restructuring.

This is the macOS portion of #31368

Updates documentation and non-public API to use American spellings for
consistency with the rest of the codebase.

No changes to behaviour... other than how it's spelt.

Corects a bnuch of typeos throuhgout teh Fluter codebsae.

Made use of the `misspell` tool:
https://github.com/client9/misspell

Adds a new macosPrefix, which serves the same purpose as iosPrefix but
for macOS plugins.

It is not yet used by the tooling, but this allows for plugins to start
to be written using it in preparation for tooling support for plugins.

Part of #32718