ButtonThemeData no longer requires a colorScheme. If colorScheme is null, ButtonTheme.of() will initialize it from the current Theme.

We decided that redefining the default for templates was premature. We're going to go back to having "module" in experimental land again, and we'll try again when we have the feature set fully baked.

This keeps the writing of the .metadata files, and writing the template type to them, because that was a good improvement, and there are still a bunch of added tests that improve our coverage.

Adds person related icons: `group` & `group_solid`, `person` & `person_solid` and `person_add` & `person_add_solid`.

* Remove new keyword from default template app

This is required in order to support "flutter run --profile"

* Allow passing a restart reason through to analytics

* Update to avoid overlaps with other code

* Remove TODO as this is the real live value

* Improve formatting + constant name

https://github.com/flutter/engine/compare/e68b85ae7ff4...bc6df5bc34dc

git log e68b85ae7ff4..bc6df5bc34dc --no-merges --oneline
bc6df5bc3 Roll buildroot to 2f0e56e63f92f1a8b80603e4b1c671fcf7b04feb (flutter/engine#6480)
2d199e85c Roll src/third_party/skia ef85d19100b1..42137de2b2b8 (7 commits) (flutter/engine#6479)
b6060d490 Missing dealloc method in FlutterEventChannel (flutter/engine#6464)


The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

Fixes https://github.com/flutter/flutter/issues/19507

https://github.com/flutter/engine/compare/bf377896ff0f...e68b85ae7ff4

git log bf377896ff0f..e68b85ae7ff4 --no-merges --oneline
e68b85ae7 Roll Tonic (flutter/engine#6478)
fcb7292cb Add build targets for fuchsia (flutter/engine#6470)


The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

Fixes #22451

* added missing properties

https://github.com/flutter/engine/compare/289c6b1a1c27...bf377896ff0f

git log 289c6b1a1c27..bf377896ff0f --no-merges --oneline
bf377896f Revert height (flutter/engine#6477)
ec103ad52 Roll src/third_party/skia a41a74ac7994..ef85d19100b1 (11 commits) (flutter/engine#6476)

The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

https://github.com/flutter/engine/compare/08af410d4ab5...289c6b1a1c27

git log 08af410d4ab5..289c6b1a1c27 --no-merges --oneline
289c6b1a1 Revert "Revert "Use single_root_scheme when compiling platform (#6402)" (#6431)" (flutter/engine#6473)

The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

Reverts flutter/flutter#22837

Try to fix application_test

* Revert "Add a profile build type to the app template (#22837)"

This reverts commit 3b248fdc.

Gradle plugin support for adding flutter as subproject to another Android app

https://github.com/flutter/engine/compare/69e9eb1cd1ce...08af410d4ab5

git log 69e9eb1cd1ce..08af410d4ab5 --no-merges --oneline
08af410d4 [dart] Roll dart to a50dfd66980ed5c9aef9851fcc57557fb607769c. (flutter/engine#6472)
25b8bbfb2 Roll src/third_party/skia 817c01aecdc4..a41a74ac7994 (1 commits) (flutter/engine#6475)


The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

This is required in order to support "flutter run --profile"

https://github.com/flutter/engine/compare/bfcdad855729...69e9eb1cd1ce

git log bfcdad855729..69e9eb1cd1ce --no-merges --oneline
69e9eb1cd Roll src/third_party/skia 9b7bfd09106f..817c01aecdc4 (1 commits) (flutter/engine#6474)
c048bec5d Roll Dart to e4840ec239249ddc6b588fabfca57df2307e0634 (flutter/engine#6466)


The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

https://github.com/flutter/engine/compare/7ecc879ffd9a...bfcdad855729

git log 7ecc879ffd9a..bfcdad855729 --no-merges --oneline
bfcdad855 Roll src/third_party/skia 00de965d0d31..9b7bfd09106f (11 commits) (flutter/engine#6471)


The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

https://github.com/flutter/engine/compare/88facf405434...7ecc879ffd9a

git log 88facf405434..7ecc879ffd9a --no-merges --oneline
7ecc879ff Fix failing test on Cirrus (flutter/engine#6469)


The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

https://github.com/flutter/engine/compare/572fa5646af7...88facf405434

git log 572fa5646af7..88facf405434 --no-merges --oneline
88facf405 Roll src/third_party/skia 8ad991da4c04..00de965d0d31 (6 commits) (flutter/engine#6467)
647302a28 Correct issues in visible children determination (flutter/engine#6455)
0052733e5 Roll src/third_party/skia 95320ee01f5b..8ad991da4c04 (1 commits) (flutter/engine#6465)
7decce221 Roll src/third_party/skia 9aa3f9095622..95320ee01f5b (1 commits) (flutter/engine#6463)
2667780b9 Roll src/third_party/skia beb1559bc61f..9aa3f9095622 (1 commits) (flutter/engine#6462)
5d28dce5e Roll src/third_party/skia e9b61ef5aa34..beb1559bc61f (1 commits) (flutter/engine#6460)
54b709d3a Roll src/third_party/skia 71143d6cc039..e9b61ef5aa34 (1 commits) (flutter/engine#6459)
9fc5013eb Roll src/third_party/skia 623d2e4120c2..71143d6cc039 (1 commits) (flutter/engine#6458)
841454c8d Roll src/third_party/skia 29b11d605f25..623d2e4120c2 (1 commits) (flutter/engine#6457)
5331df8e4 Roll src/third_party/skia d037f4d204c2..29b11d605f25 (1 commits) (flutter/engine#6456)
6d4de7fc8 Roll src/third_party/skia 51c89e41c05b..d037f4d204c2 (9 commits) (flutter/engine#6454)
ba9b90766 Add `run_tests.sh` to cirrus (flutter/engine#6441)


The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

Publish make-host-app-editable command with CLI docs.

* Update uses of ButtonTheme.bar

* updated gallery themes

* Remove unnecessary const

Fixes #22789

* Refactor AnimatedSwitcher

This is mostly just a little bit of cleanup with hopefully no semantic
changes, done to teach me how the code works so that I could fix a bug.

* Add debugging information to AnimatedSwitcher

* Fix AnimatedSwitcher to handle the case of back-to-back changes

Previously, if a child was replaced the very next frame after it was
added, we'd get confused because we tried to reverse the controller,
which causes us to remove the child from the going-away list, before
we had added the child to the list in the first place.

The fix is just to move the reverse to after the add.

We'll roll this back as soon as the Dart analyzer gets upgraded in
Google3.

* [Typo] it it -> if it

Obviously a small change, looks like a little copy-paste accident.

Adds a Fuchsia compatibility function that allows for connecting to a
specific Isolate by name when running Flutter Driver on a Fuchsia
device.  This will check over multiple Dart VM's in an attempt to find
an Isolate by its name.