* guard new formatter behind env var

This reverts commit 58fb1832.

* Revert "Roll engine 31b289f277c6..b1b388f1c235 (7 commits) (#29323)"

This reverts commit 58ac1287.

Also rolls:
8b1a299ed [Skia] Rollback Skia to 29d5dec9a0783a033b921dc483fb98d565d684f6 (flutter/engine#8151)
9f50dae33 Look up ICU symbols based on the path to libflutter.so as a fallback (flutter/engine#8139)
59715b71d Disable build_ios task due to lack of credits. (flutter/engine#8150)

* 59715b71d Disable build_ios task due to lack of credits. (flutter/engine#8150)

* 9f50dae33 Look up ICU symbols based on the path to libflutter.so as a fallback (flutter/engine#8139)

* 8b1a299ed [Skia] Rollback Skia to 29d5dec9a0783a033b921dc483fb98d565d684f6 (flutter/engine#8151)

* 8be2aca56 Roll src/third_party/dart 1bd36d694d..674fd0e060 (48 commits) #8152

* 2e427030f Revert "Disable build_ios task due to lack of credits. (#8150)" (flutter/engine#8153)

* 2daebebf4 Fix text.dart height docs (flutter/engine#8079)

* b1b388f1c Encode scroll motion events in the Android touch processor (flutter/engine#8149)

This reverts commit 53d45258.

* Avoid writing to stderr before process has finished streaming

31b289f27 Fix indexing error in dart:ui TextStyle.toString (flutter/engine#8143)
fc2e6b61c Typo "fast an inline" to "fast and inline" (flutter/engine#8142)
0f19b2de0 Reland PerformanceOverlayLayer golden test (flutter/engine#8140)
073aadde1 Fix TextStyle decode misalignment (flutter/engine#8141)
d87d29054 Roll src/third_party/skia 406b068942f0..2eecc3ea3d71 (11 commits) (flutter/engine#8138)
5cef4a022 Use final state passed to dart before initialization as the initial lifecycleState. (flutter/engine#8124)
ffef51be6 Roll src/third_party/skia 665bc64a2dc4..406b068942f0 (8 commits) (flutter/engine#8137)
48efd0fb7 Roll src/third_party/skia 762ddd7e4352..665bc64a2dc4 (2 commits) (flutter/engine#8129)
f666adbbd Roll src/third_party/skia 2932a458957d..762ddd7e4352 (3 commits) (flutter/engine#8128)
8b0df6ded Bugfix #29203: NPE in getAccessibilityProvider in old FlutterView. (flutter/engine#8126)
8f7b18345 Roll src/third_party/skia c6d8781c4036..2932a458957d (2 commits) (flutter/engine#8125)
52b67fdd5 Expose decorationThickness to dart:ui (flutter/engine#8008)

Don't show handles outside the text field's boundary.

* Always composite PhysicalModels
* Update tests to check layer tree instead of canvas for Physical shadows

* No image shader caching in default shader warm-up

It turns out that no matter how small the image is, too much memory will
be used. Hence remove the image shader caching and let the client
implement itself based on needs.

Fixes https://github.com/flutter/flutter/issues/29172

* Fix

* Install JDK and Android SDK only for integration and build tests

* Updated ListView Sample code with more examples for different constructors and also to match asset diagrams.

* Fixed MIA semicolons.

* Code cleanup.

* Added context for ListView.builder example.

* Analyzer does not like const and static usages.

* Replaced the const declarations with final. The analyzer does not like the use of const here, at all.

* Fixed parameterized declarations.

* Add a `flutter create --list-samples` command

* Add some comments/docs

* Tweak text

https://github.com/flutter/engine/compare/56d8634c51ff...5ccee9537334

git log 56d8634c51ff50534b1853b71205eff861131dcf..5ccee95373348854bc4877cfe240024a36847d2d --no-merges --oneline
5ccee9537 Roll src/third_party/skia e9c1ce89c005..c6d8781c4036 (29 commits) (flutter/engine#8123)
20165b314 Integrated AndroidTouchProcessor within the old FlutterView (flutter/engine#8095)
bc901324f Revert "Add support for trace counters with variable arguments and instrument the raster cache. (#8094)" (flutter/engine#8122)
2a0d35428 Add support for trace counters with variable arguments and instrument the raster cache. (flutter/engine#8094)

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 (mklim@google.com), and stop
the roller if necessary.

https://github.com/flutter/engine/compare/a71609f0695c...56d8634c51ff

git log a71609f0695c2977ac96b7a79e67e24767abfda2..56d8634c51ff50534b1853b71205eff861131dcf --no-merges --oneline
56d8634c5 Improve shadow doc in PhysicalShapeLayer (flutter/engine#8114)
bd0f9085e Adds a platfromViewId to SemanticsNode (flutter/engine#8055)

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 (mklim@google.com), and stop
the roller if necessary.

* Fix MouseTracker annotation leak

Map's remove method is typed `remove(Object key)`, which can cause bugs.

Modified the existing test to check if the annotation has been removed
from MouseTracker.

https://github.com/flutter/engine/compare/0d2cf5857b2b...a71609f0695c

git log 0d2cf5857b2be0949435f60c0188f1aed4d93c93..a71609f0695c2977ac96b7a79e67e24767abfda2 --no-merges --oneline
a71609f06 Roll src/third_party/skia bd050b90f8c7..e9c1ce89c005 (8 commits) (flutter/engine#8113)
35e3b2b86 Roll src/third_party/skia 92ae09900456..bd050b90f8c7 (7 commits) (flutter/engine#8111)
04fe0078f Roll src/third_party/dart 2fb6cd9f5f..674fd0e060 (58 commits) (flutter/engine#8110)

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 (mklim@google.com), and stop
the roller if necessary.

Adds support for discrete scroll events, such as those sent by a scroll wheel.

Includes the plumbing to convert, dispatch, and handle these events, as well as
Scrollable support for consuming them.

Substantially reduces the danger that a bug in the analysis server
might prevent errors from being detected by `flutter analyze`.

* Updating sample code for container to match forthcoming diagrams in assets-for-api-docs.

* Analyzer unhappy with Colors, fixing.

* Resolving push conflict (hopefully)

* Analyzer fix.

* Corrected color to match brand gallery

* Fixing wrap and indentation.

https://github.com/flutter/engine/compare/14d1584a2262...0d2cf5857b2b

git log 14d1584a22627e9a1eefc0e5f3de78caffcde09e..0d2cf5857b2be0949435f60c0188f1aed4d93c93 --no-merges --oneline
0d2cf5857 Fix the Windows build (flutter/engine#8106)
a28b53007 Log non-kSuccess returns from embedder API calls. (flutter/engine#8096)

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 (mklim@google.com), and stop
the roller if necessary.

* print stderr to stderr, no bq if not contributor

* let test continue of bigquery fails

I inadvertently commented this out in my previous PR around this.