Fixes the hasScrollBody flag not accounting for child size. Adds the ability to specify over-scroll behavior.

Updated ColorScheme.dark() primaryVariant, surface, background and error
colors to match the spec.

https://github.com/flutter/engine/compare/f3482700474a...5467f6f63046

git log f3482700474a791dabe9c4783568ed0fe512b04d..5467f6f63046620b0ef1edc72ae06f9fad941cee --no-merges --oneline
5467f6f63 Roll src/third_party/skia bf1d4effe171..19547c91b983 (4 commits) (flutter/engine#9942)
15797da86 Roll src/third_party/skia de71a74fc40e..bf1d4effe171 (5 commits) (flutter/engine#9940)
db0839ab9 Copy over fuchsia dev key from buildroot (flutter/engine#9936)
934e22571 Build fuchsia artifacts from the engine (flutter/engine#9933)
9e0477643 Update the exception thrown for invalid data in the codec test (flutter/engine#9929)
678ce2e87 Fix reentrancy handling in SingleFrameCodec (flutter/engine#9931)
9bb1b89cb Update libcxx & libcxxabi to HEAD in prep for compiler upgrade. (flutter/engine#9906)
cad5cc296 Roll src/third_party/skia 3e6aa9f52839..de71a74fc40e (11 commits) (flutter/engine#9930)
5ed71f19b Handle decompressed images in InstantiateImageCodec (flutter/engine#9901)
ad5ae0f2d Update Buildroot Version (flutter/engine#9927)
f20e9350d Fix failure of the onReportTimings window hook test (flutter/engine#9923)
eaf1f33e5 Don't try to use unset assets_dir setting (flutter/engine#9924)
ae14f0461 Add the isMultiline semantics flag to values (flutter/engine#9894)
cf3fd6df0 Roll src/third_party/skia 83cfe4fa24d9..3e6aa9f52839 (6 commits) (flutter/engine#9921)
cf40c243a Removed unused method. (flutter/engine#9919)
7bd8fc317 Roll fuchsia/sdk/core/mac-amd64 from GcUOj20BDDGW4Sz4cnsI4_Lf9qte_6OCgQBmDQLnGNcC to xNAaLqZJk8Bkz00BaHGzE8hCpiohggO7KabM3g2wdsQC (flutter/engine#9918)
68ae872e2 Made the persistent cache's directory a const pointer. (flutter/engine#9815)
8720043dc Roll src/third_party/skia a2e7d5e2b63c..83cfe4fa24d9 (3 commits) (flutter/engine#9916)
b28ccd8e1 Roll fuchsia/sdk/core/mac-amd64 from 9XAYIkrdh9JQjy22gyni7VbK2yYurszww1k9zRQ_jU8C to GcUOj20BDDGW4Sz4cnsI4_Lf9qte_6OCgQBmDQLnGNcC (flutter/engine#9915)
89a9a95af Roll fuchsia/sdk/core/mac-amd64 from lXCuLh2YGWM641A5Io3ASt3Uy70e_YGRKFLf46new08C to 9XAYIkrdh9JQjy22gyni7VbK2yYurszww1k9zRQ_jU8C (flutter/engine#9911)
c8f35b948 Roll src/third_party/skia ea6da6909624..a2e7d5e2b63c (3 commits) (flutter/engine#9910)
8704d61ec Roll src/third_party/dart 6bf1f8e280..63120303a7 (4 commits)
866d0570f Roll src/third_party/dart 0506882b37..6bf1f8e280 (9 commits)
72893549a Roll src/third_party/dart 8cb7e4c237..0506882b37 (3 commits)
d84b9385a Roll src/third_party/dart 41d3971e83..8cb7e4c237 (2 commits)
52b226cd4 Roll src/third_party/dart 2b3336b51e..41d3971e83 (3 commits)
cf4129bbb Roll fuchsia/sdk/core/mac-amd64 from 0NcHg3_AYcxrkseoO6xmXrQ-GZ82gy8CE5NU-SDJq_QC to lXCuLh2YGWM641A5Io3ASt3Uy70e_YGRKFLf46new08C (flutter/engine#9908)
c2133b41a Roll src/third_party/skia d7639aff1001..ea6da6909624 (7 commits) (flutter/engine#9907)
ca91c66d7 Roll fuchsia/sdk/core/mac-amd64 from JDPk4JFZX16IXpzzjQH5KFf0vRALbOtJYiMHCqFLFOQC to 0NcHg3_AYcxrkseoO6xmXrQ-GZ82gy8CE5NU-SDJq_QC (flutter/engine#9904)
fd2cb8150 Respect EXIF information while decompressing images. (flutter/engine#9905)
dd06cda54 Fix justify for RTL paragraphs. (flutter/engine#9859)
be3e2ed4c Fix fuchsia license detection (flutter/engine#9857)
b7b791b3f In a single frame codec, release the compressed image buffer after giving it to the decoder (flutter/engine#9825)
1af19ae67 Roll fuchsia/sdk/core/mac-amd64 from PHtpiJGexJFgd7sgPTUbFphKES09fzotmtrO2kTHI08C to JDPk4JFZX16IXpzzjQH5KFf0vRALbOtJYiMHCqFLFOQC (flutter/engine#9892)
5d9f7b18e Log dlopen errors only in debug mode (flutter/engine#9890)
8f060b995 Add clang version to Info.plist (flutter/engine#9873)
0fcf3b3ef Roll src/third_party/skia e574f1e409aa..d7639aff1001 (16 commits) (flutter/engine#9889)

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

When we were running `pub` within `flutter pub`, we were
unconditionally including the `--verbosity=warning` argument.
Then we were conditionally including `--verbose` if we were
running in verbose mode.  However, the former argument
supersedes the latter, and we were never able to run `pub`
in verbose mode.

This disables the Firebase Test Lab release smoke test, I think it's failing for reasons that probably don't have to do with the commit that started failing (which I think is dd51afd1).

This is blocking autoroll of flutter/engine@b7b791b which fixes a TODAY bug: #36079

This updates `AsyncSnapshot.data` to act as `AsyncSnapshot.requireData`
used to -- and it removes `AsyncSnapshot.requireData`. Correspondingly,
this adds a `StreamBuilder.withoutInitialData()` constructor, makes the
`initialData` argument to the default `StreamBuilder()` constructor required,
and deprecates the `initialData` argument to the `FutureBuilder()` constructor.

See the  breaking change announcement for more info.

https://github.com/flutter/flutter/issues/34545
https://groups.google.com/forum/#!topic/flutter-announce/H6Od0QdsdrI

This PR makes ModalBarrier dismiss modal with any button press instead of primary button up, by making it use a private recognizer _AnyTapGestureRecognizer that claims victor and calls onAnyTapDown immediately after it receives any PointerDownEvent.

This is a partial re-application of #24669, which was
reverted due to Fuchsia breakages.

https://github.com/flutter/flutter/issues/24413

* Implement InputDecorationTheme copyWith, ==, hashCode 

This is the first step in getting esoteric devices wired
up to device lab to ensure that we can at least start Flutter
apps in profile mode on such devices.

https://github.com/flutter/flutter/issues/35838

This reverts commit ab26e1b4.

https://github.com/flutter/engine/compare/f3482700474a...1af19ae67dd1

git log f3482700474a791dabe9c4783568ed0fe512b04d..1af19ae67dd16e5f6e601daa38745b073730e450 --no-merges --oneline
1af19ae67 Roll fuchsia/sdk/core/mac-amd64 from PHtpiJGexJFgd7sgPTUbFphKES09fzotmtrO2kTHI08C to JDPk4JFZX16IXpzzjQH5KFf0vRALbOtJYiMHCqFLFOQC (flutter/engine#9892)
5d9f7b18e Log dlopen errors only in debug mode (flutter/engine#9890)
8f060b995 Add clang version to Info.plist (flutter/engine#9873)
0fcf3b3ef Roll src/third_party/skia e574f1e409aa..d7639aff1001 (16 commits) (flutter/engine#9889)

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

https://github.com/flutter/engine/compare/8849d3092d5a...f3482700474a

git log 8849d3092d5aa6866501663cd62397f1a1564e67..f3482700474a791dabe9c4783568ed0fe512b04d --no-merges --oneline
f34827004 Simplify buildtools (flutter/engine#9875)

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

Using custom exception class for network loading error

* add failing tests

* fix tests

* be more specific with try-catch

* add further mocking to get tests to pass again

* fix analyzer failure

https://github.com/flutter/engine/compare/eb248c242574...8849d3092d5a

git log eb248c242574e8f7f4d4b4532b6db21dfbe1a5a0..8849d3092d5aa6866501663cd62397f1a1564e67 --no-merges --oneline
8849d3092 Add multi-line flag to semantics (flutter/engine#9850)
91e7a7671 Roll src/third_party/dart 24725a8559..2b3336b51e (108 commits) (flutter/engine#9883)
3cd3e5e72 Roll fuchsia/sdk/core/mac-amd64 from x0S8o-I3LOxltQzGPHsScGKtGALS89j7LYlSANNF-T8C to PHtpiJGexJFgd7sgPTUbFphKES09fzotmtrO2kTHI08C (flutter/engine#9885)
cd321ee29 Assign missing headless execution variable (flutter/engine#9855)
3186ffe30 Roll src/third_party/skia 63fdd0191be0..e574f1e409aa (1 commits) (flutter/engine#9882)
9c9daa0cb Roll fuchsia/sdk/core/mac-amd64 from f97PVV8BR3sa4rxRIc-xgvBxd6HYa8mKNp8zGmqqx-UC to x0S8o-I3LOxltQzGPHsScGKtGALS89j7LYlSANNF-T8C (flutter/engine#9881)

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

Fixes RenderSliverFixedExtentBoxAdaptor correctly calculates leadingGarbage and trailingGarbage. (#36302)