* update lint list

* enable sort_pub_dependencies

* enable avoid_returning_null_for_void

* enable flutter_style_todos

* Refactor Test Driver in preperation for `flutter test` integration tests

* Fix indent

This means we can just always add it to test teardowns without having to add try/catches if there are any tests that don't spawn a process.

https://github.com/flutter/engine/compare/c02dd8f935a4...cebde437a1b1

git log c02dd8f935a4..cebde437a1b1 --no-merges --oneline
cebde437a Guard the service protocol's global handlers list with a reader/writer lock. (flutter/engine#6900)
b6e93759f Revert "Guard the service protocol's global handlers list with a reader/writer lock (#6888) #6895" (flutter/engine#6899)
b44b94eea Roll src/third_party/skia 66b91e4afb88..def9bcecd994 (1 commits) (flutter/engine#6898)
25db6e082 Roll src/third_party/skia d017e5138c57..66b91e4afb88 (1 commits) (flutter/engine#6897)
fd0911cc0 Guard the service protocol's global handlers list with a reader/writer lock (#6888) (flutter/engine#6895)
fffcce47f Roll src/third_party/skia 1bfdd1adfa22..d017e5138c57 (1 commits) (flutter/engine#6896)
a01c82e9d Roll src/third_party/skia 7e9ea391cfce..1bfdd1adfa22 (1 commits) (flutter/engine#6894)
9ba556156 Revert "Guard the service protocol's global handlers list with a reader/writer lock (#6888)" (flutter/engine#6893)
517e52548 Roll src/third_party/skia 73b4a1f57254..7e9ea391cfce (1 commits) (flutter/engine#6892)
9352360c8 Guard the service protocol's global handlers list with a reader/writer lock (flutter/engine#6888)
9296d80c8 Roll src/third_party/skia 7fb30f11a055..73b4a1f57254 (3 commits) (flutter/engine#6891)
93cbf60b6 Roll src/third_party/skia 281224020a57..7fb30f11a055 (1 commits) (flutter/engine#6889)
aa9793f73 Roll src/third_party/skia a2187bf7629a..281224020a57 (5 commits) (flutter/engine#6887)
3978f0753 Keep a copy of each engine's description that can be accessed outside the engine's UI thread (flutter/engine#6885)
0870e3782 Roll src/third_party/skia 3b155a77c370..a2187bf7629a (11 commits) (flutter/engine#6884)


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* sliver separation and test

https://github.com/flutter/engine/compare/5a694c47738d...c02dd8f935a4

git log 5a694c47738d..c02dd8f935a4 --no-merges --oneline
c02dd8f93 Don't load a splash screen by default (flutter/engine#6883)
8a42213d0 Remove unused examples targets. (flutter/engine#6882)


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Hopefully Firebase is all done compacting now, so we're going to try and build docs again.

https://github.com/flutter/engine/compare/c622e563e764...5a694c47738d

git log c622e563e764..5a694c47738d --no-merges --oneline
5a694c477 Roll src/third_party/skia c00e47054744..3b155a77c370 (2 commits) (flutter/engine#6881)
5ded3679e Roll src/third_party/skia a89316d8227b..c00e47054744 (4 commits) (flutter/engine#6880)
5c327e196 Roll src/third_party/skia c5df7cb3d9f7..a89316d8227b (10 commits) (flutter/engine#6878)


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While investigating reports from @gspencergoog about unexpectedly failing tasks I've found out that `tool_tests` sometimes fails with Out Of Memory errors. I've also added detection of such issues to Cirrus CI.

* SwitchListTile.adaptive for wrapping an adaptive Switch

* Test SwitchListTile.adaptive same as Switch.adaptive

* Remove TODO

* Comment and switch statement cleanup

* nav fix and test

* Adds fix and test

https://github.com/flutter/engine/compare/04e716ff2cf3...c622e563e764

git log 04e716ff2cf3..c622e563e764 --no-merges --oneline
c622e563e Roll src/third_party/skia 6e486cec6a10..c5df7cb3d9f7 (4 commits) (flutter/engine#6877)
61725486b Roll src/third_party/skia c735b4f9dc50..6e486cec6a10 (1 commits) (flutter/engine#6875)


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04e716ff2 Roll src/third_party/skia dcdb6042002f..c735b4f9dc50 (1 commits) (flutter/engine#6874) (#24438)


https://github.com/flutter/engine/compare/333c2c1ac41f...04e716ff2cf3

git log 333c2c1ac41f..04e716ff2cf3 --no-merges --oneline
04e716ff2 Roll src/third_party/skia dcdb6042002f..c735b4f9dc50 (1 commits) (flutter/engine#6874)


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* Fix radius glitch by carrying over border when lerping outline borders

* Test that border doesn't change

* Regression comment

333c2c1ac Roll src/third_party/skia e5bb81f640a1..dcdb6042002f (2 commits) (flutter/engine#6871) (#24422)


https://github.com/flutter/engine/compare/d1ea3fe02f62...333c2c1ac41f

git log d1ea3fe02f62..333c2c1ac41f --no-merges --oneline
333c2c1ac Roll src/third_party/skia e5bb81f640a1..dcdb6042002f (2 commits) (flutter/engine#6871)


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https://github.com/flutter/engine/compare/699f328df578...d1ea3fe02f62

git log 699f328df578..d1ea3fe02f62 --no-merges --oneline
d1ea3fe02 Roll src/third_party/skia 2791be403817..e5bb81f640a1 (2 commits) (flutter/engine#6870)
921eca92e Roll src/third_party/skia 5fb83f94c1f2..2791be403817 (5 commits) (flutter/engine#6869)
d8b52ef89 Reland "Clean up stale cache entries in Skia's GrContext" (flutter/engine#6867)
e6f22b74e Fix license headers (flutter/engine#6868)
6de0be2db Add presubmit check for license count (flutter/engine#6759)


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* Roll engine to 699f328df5787f4960808cd3bd729dcb741e6132 (#24409)

* add missing entry to material_mr.arb

* Make progress indicators accessible

(re-land of #24244)

This generates a zip file containing all of the docs, and uploads it when we publish docs, as well as a
Dash/Zeal docset that contains a feed of the docs.

Addresses at least part of #9955

* Handle a missing ListView separator as an error

* Handle missing item, and errors in itemBuilder and separatorBuilder

* CR fixes and move error handling into sliver.dart to handle all ListView constructors

* Only show an error for null separatorBuilder value in debug mode

* Revert "Add dashing config file for generating docset from flutter docs (#24374)"

This reverts commit ec8ca860.

* Revert "Update driver script to execute test through test_core (#24168)"

This reverts commit 6c62cf33.

db5908815 Roll src/third_party/skia 7d2aae3165a2..2eccd58916ee (3 commits) (flutter/engine#6862) (#24387)


https://github.com/flutter/engine/compare/00e4abff84a6...db59088159a5

git log 00e4abff84a6..db59088159a5 --no-merges --oneline
db5908815 Roll src/third_party/skia 7d2aae3165a2..2eccd58916ee (3 commits) (flutter/engine#6862)


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* Added support for passing in velocity and offset into Draggable.onDragCompleted.

* Fixed documentation of DragCompletedCallback.

* Spun off previous onDragCompleted breaking changes into new callback called Draggable.onDragEnd.

* Revert "Fixed documentation of DragCompletedCallback."

This reverts commit 069051f5be0d4ec6a1f4b3f072e535ca87e5d740.

* Revert "Added support for passing in velocity and offset into Draggable.onDragCompleted."

This reverts commit 7ef744aa5645429b7bc92527226203ee8bff68ec.

* DraggableDetails constructor is now declared first as per Flutter code style.

* Draggable.onDragEnd will only call back if its widget is currently mounted to the tree.

* Moved "});" in DraggableDetails constructor to new line, vertically aligned with the constructor name, as per Flutter code style.

* Added space between if statement in drag_target.dart.

* widget.onDragEnd call is now formated as per flutter code style.

* Added more details to DraggableDetails documentation.

* Added brackets to if statement block as per Flutter code style.

* Fixed minor nits in DraggableDetails documentation.

* Made DraggableDetails constructor public. Also added documentation for its constructor.

https://github.com/flutter/engine/compare/498bbd5ef9c1...00e4abff84a6

git log 498bbd5ef9c1..00e4abff84a6 --no-merges --oneline
00e4abff8 Roll src/third_party/skia 44764000b49c..7d2aae3165a2 (1 commits) (flutter/engine#6861)
2c6be93fa Clean up stale cache entries in Skia's GrContext (flutter/engine#6859)


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* fix test in xcode_backend.sh

* -n

* fix devicelab test

* uncomment good code, check for \"\"

* Fix test so it doesn't leak frontend_server process

* Stop FlutterTestDriver even if expectation is not met

https://github.com/flutter/engine/compare/289de46d3e55...498bbd5ef9c1

git log 289de46d3e55..498bbd5ef9c1 --no-merges --oneline
498bbd5ef Roll src/third_party/skia f152130ef910..44764000b49c (8 commits) (flutter/engine#6860)
f23862b25 Added delegate forwarding for didReceiveLocalNotification and willPresentNotification (flutter/engine#6858)
110a5f320 Reset a11y bridge state on hot restart (flutter/engine#6857)


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FlutterDriver: allow customizing timeouts using a multiplier

Fixes #24158
Re-lands #24173

If maxLength is set to TextField.noMaxLength then continue to show the character counter but do not display the max input length value.