Text shadows can now be added to a TextStyle by providing a List<Shadow>. The dart:ui Shadow class is now the base class to flutter BoxShadow.

This reverts commit 74662ab6.

This should land after https://github.com/flutter/engine/pull/6442

* Add pragma vm:entry-point

Otherwise, an object may be both null and an instance of EnginieLayer at
the same time in Dart.

1f4dfce179 [gardening] Mark co19 LibTest/io/HttpServer/close_A05_t01 flaky
5cbb640f7c Error for type arguments after named constructor with implicit new
2fa1143600 Check classes at mixin applications
ade528c4e6 Fixed the type alias omission in the def. of simple bounds
ddf67772bb Remove warning about inferring packages URI from dart2js
18110717fe Move infer methods to visitor
bd223d0ec4 Add consistent_type_error_test
d95f63d752 Update dartfix to use new invalid type argument fix
0cdd5b9ff3 Raise warning to error: duplicate key in a const map is now an error in Dart.
f6ca2c1d8f Remove the Dart 1 tests.
9f98f5f44c Remove instantiateToBounds parameter from FunctionTypeImpl.relate.
82f31cd250 Add types to method args to avoid analysis warnings.
63c9a241e3 Upgrade WRONG_NUMBER_OF_TYPE_ARGUMENTS_CONSTRUCTOR from a warning to an error
5658d406b7 Add changelog entry for integer literals in double contexts.
6b67cd784b [vm] Make UBSAN happy for the code in Range::BitwiseOp
e4c3fa0a9c Improve recovery when parsing named constructor invocation with invalid type arguments
3e7ce992cf [vm/tfa] Implementation of type arguments tracking in TFA.
001343ce06 [vm, gc] Disable reads and writes to from-space after a scavenge.
97ffcd9a3d [vm] Disable incorrect widening of smis to int32
1a4933715e [gardening] Mark co19 LibTest/io/RawDatagramSocket/any_A03_t01 flaky
e4842a293b Remove extra spaces in headers
58c90dc488 [vm] Fix bytecode in core-jit for simarm64
fab5d0a50d In InheritanceManager remove unused, and deprecate used (in lints) methods.
2989116219 Add some special cases for types we can't/don't need to parse
49b121f20d Remove TypeParameterSerializationContext.location.
244e6c7ffc Infer package URIs
cc884b3449 Remove optional argument from FunctionTypeImpl.forTypedef.
931202df27 Improve wrapping of lists and *notes* in LSP spec comments
3e897ac3b1 [vm] Extend previous status file updates.
23e7f9d1eb Handle references to other classes in comments
472c898c87 [dartdevc] fix for-in loop variable shadowing a var used in initialzer
3fe3106489 [gardening] Fix leaks in run_vm_tests binary detected by ASAN.
a6c8b62056 Remove dummy .packages files
2f7e7a4b52 [vm] Update status files for vm-kernel-mac-product-x64 for issue 34760.
e12538fff0 Move package bundle functionality into SummaryBaseTestStrategy.
96737787e2 Add LSP spec code-gen output
5e7ea5b672 [infra] Add .vpython spec to fix gsutil on the bots (#31065)
3cf0008b13 [vm/bytecode] Remove dependencies on ASTs when running with bytecode
fc0decc262 Improvements to the Dart code generated from the LSP spec.
efcca1132b Switch ErrorVerifier and OverrideVerifier to InheritanceManager2.
c347850976 [gardening] Mark co19 LibTest/io/RawDatagramSocket/timeout_A06_t01 as flaky
5e1bf1d135 Create LibraryScope once per library analyzer.
7c7df7bfa4 Add initial version of feature specification on interface conflicts.
f2bffc6872 Revert "[infra] Upgrade gsutil to a new version (#31065)"
1809bae318 Revert "Ignore JSON exceptions when reading (empty) test results file"
787194e738 [infra] Upgrade gsutil to a new version (#31065)
265d0d9ec1 Update status files after 8648d782
23c36ed029 Elaborate that -0 means -0.0 in double context or when compiled to JS.
8648d782ae Reland "[fasta] Report errors for bounds violations"
5c9a8d8cb5 [VM] Add $target_gen_dir/gen_kernel_bytecode.dill.d to outputs of GN action, to ensure directory is created before action is run
49d7fb39ac Temporarily ignore --strong option in flutter builds
f0a30bc8d1 Revert "[vm] Add a library and class cache to KernelProgramInfo"
1c2ed4ac11 [infra] Include gsutil in vm-kernel fileset to enable coredumps on shards (#31065)
5b32ab3be6 Remove the word "strongMode" from some package:kernel libraries.
dfb8e97b86 Report errors on members hiding prefixes
235a918233 [vm] Remove Dart_LoadScript, Dart_LoadLibrary, Dart_LoadSource, etc.
90e362f63c Deprecate the last non-deprecated EMPTY_LIST
0ab8e42fea Use a special context for serializing generic function types.
c47879d354 Remove one-phase summary logic.
b9dd229e35 Convert element.dart to triple-slash comment style.
e70a7aab8a [VM] Dead code removal - Remove dead code around creation of service isolate in gen_snapshot.cc - Create service isolate from the core snapshot - exclude sources from platform dill file (saves about 2.5MB in size)
662ff7f112 [vm] Remove TokenStream, TokenValue, CompilerStats.
a933f42b9e [VM] Use Symbols::Empty() when there is no source for a script instead of creating new empty string objects. Change-Id: I8ec6702557b07c4c4ede2aece5a3f25b4cde1a5b Reviewed-on: https://dart-review.googlesource.com/c/79060Reviewed-by: NRyan Macnak &lt;rmacnak@google.com&gt; Commit-Queue: Siva Annamalai <asiva@google.com>
72b31316e4 [observatory] Fail gracefully when a Script lacks source code.

Roll tonic to dd971f40ba7646fab586ac2b6370721257109cb7

https://skia.googlesource.com/skia.git/+log/1b62fad4b188..b27a9cf2f4a8


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https://skia.googlesource.com/skia.git/+log/05caa69a3f5a..1b62fad4b188


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https://skia.googlesource.com/skia.git/+log/2a138544646d..05caa69a3f5a


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Add a `-[FlutterViewController setFlutterViewDidRenderCallback:]`
method on iOS so client applications can be notified when the Flutter
view has rendered.  This can be used for add2app cases to determine
when to take an initial screenshot for comparisons in automated
tests.

The callback is expected to be an Objective-C block (or Swift
closure).  I chose to support only a single callback because it's
much simpler (especially since it does not require a separate method
to unregister the callback), and it's not clear that there are use
cases that would justify additional complexity.  Clients have the
flexibility to make their callback invoke other callbacks anyway.

I alternatively considered adding a `-[FlutterViewController
viewDidRenderFirstFlutterFrame]` method that clients could override
in a subclass, but using an Objective-C block seems more flexible and
less of a burden.

Fixes https://github.com/flutter/flutter/issues/20665

https://skia.googlesource.com/skia.git/+log/e7588323d586..2a138544646d


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https://skia.googlesource.com/skia.git/+log/a631669e50a2..e7588323d586


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* Revert "Revert "Allow raster caching any layer subtree (#6442)" (#6506)"

This reverts commit c6e6da51.

* Use raw pointer for RasterCacheKey

So we won't depend on whether it's a std::unique_ptr or std::shared_ptr.

Reverts flutter/engine#6442

container_layer.h file is not synced which broke the bots

We first test this with OpacityLayer. This test alone (without retained rendering) should have ~30% speedup as we'll have fewer render target switches by snapshoting in the Preroll instead of saveLayer in the Paint.

In my local flutter_gallery transition perf tests, the average frame time drops from ~16ms to ~12ms.

https://github.com/flutter/flutter/issues/21756

https://skia.googlesource.com/skia.git/+log/9c37cd96e4c8..a631669e50a2


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https://skia.googlesource.com/skia.git/+log/932759e9b414..9c37cd96e4c8


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https://skia.googlesource.com/skia.git/+log/f03d4eaa2487..932759e9b414


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https://skia.googlesource.com/skia.git/+log/9835dd51b320..f03d4eaa2487


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https://skia.googlesource.com/skia.git/+log/04ac46135f23..9835dd51b320


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* [dart] Roll dart to b99bcfd3099f0d32e39287160a9539e878cb0b68

Changes since last roll:
```
b99bcfd309 [vm] Add a library and class cache to KernelProgramInfo
5deb1c6e81 [vm] Remove strong mode and sync-async flags from pkg/vm
9a6f811466 Report null error as a NoSuchMethodError
2da0b9f4f1 fix some typos
34f6aea008 [release] Prepare changelog for 2.1.0-dev.7.0
f320477ff9 [dartdevc] add module-name option to kernel backend
b8760fed67 [vm, compiler] Remove ASTs and AST flow graph builder.
340e74629f Clean up OverrideVerifier.
f11e746c2e Initial implementation of fixes for type arguments on named constructor invocations
08e485c43f Update dartdoc to 0.23.1.
ac4b8a7306 Hook up FixProcessor to fix errors in dartfix
0aa99cca99 Ignore JSON exceptions when reading (empty) test results file
6d9cc6fa03 Add skeleton for parsing LSP spec from Markdown/TypeScript to generate Dart data classes
bc4d2f5d1b Switch InheritanceManager2Test to DriverResolutionTest.
e221a6288b Move reporting MISMATCHED_GETTER_AND_SETTER_TYPES for classes to using new interfaces.
be39eacf00 Rename convertPathForImport -> convertAbsolutePathToUri
a539d2ef5f Revert "[fasta] Report errors for bounds violations"
c8b709d95b Update status files after aa6fb2d3
051108c004 [tools] Re-enable core-dump archiving on Linux.
aa5b1b1f2f Make test results in json format end with a newline
4db2bbe94d Pass SharedOptions to Fasta
f1d902f4a0 Ignore --supermixin and -D options
a9b47bd0b1 Integrated nosuchmethod-forwarding.md into dartLangSpec.tex
327a1a9a00 [Gardening] Mark more co19_2 test as always flaky, filed co19 issues
f1b6d81404 Remove Target.strongMode
7072d3b17e [infra] Upgrade d8 to 6.9.427.23 (#34698)
16ddfc1565 [VM] Use assert assignable implementation for explicit downcasts
17ac151f44 [Gardening] Increase timeout on release-hotreload configuration as well (not just debug), skip streamed_conversion_json_utf8_decode in hot-reload-simdbc64
8c872e0e3a Remove TargetFlags.strongMode
ee97806084 Replace strongMode with legacyMode in CompilerOptions
aa6fb2d3a4 [fasta] Report errors for bounds violations
8247fb7eec Stop stripping d8 for benchmarking.
da48c1d960 [Gardening] Mark more tests as flaky and filed co19 issues
41866e87da [Gardening] Mark co19_2 test as always flaky, filed co19 issue (and co19 PR)
ecd13de9da [Gardening] Mark slow_path_shared_stub_test as slow (reaches 1 minute on windows)
f942af451b Remove kernel interpreter
7007567685 Fix issue with --unsafe-package-serialization
2695f36016 [Gardening] Status update (co19_2, optcounter/ia32)
ba5e14b195 Store return type and parameters separately in GenericFunctionTypeElementForLink.
ba1b30af37 Add AST support for type arguments on named constructors
ed6c557d1a Add cli parameters to kernel_sdk.dart to get all paths explicitly
71395df7dd [vm/interpreter] Fix flaky errors when running with interpreter
b3af151325 Rework detection of uninstantiated bound errors.
34651d204e [gardening] Update status
f35465dafd Remove DynamicElementImpl.library property.
daa13ad0aa Fix preamble/d8.js currentScript for v8 6.9
9cde31ba1d Try interface candidates in reverse order.
5561e69f4e Replace dartfix confirm apply changes with --force
619a06370e Update dartfix to only allow target directories
751cf1974a [dart/fuzzer] Add DBC as execution mode.
70317473f0 [gardening] Update status
8fc80031ae Fix cast exception in OpTypeAstVisitor
2cf6ba2996 Generate the right error message for type arguments on a named constructor
5976fe373f Fix up InferredTypeTest_Driver to use InferredTypeMixin directly.
32c484bb71 [VM] Fix typo in BitTestImmediate unit test.
a8e0db1077 [gardening] Mark remaining ASAN failures.
7f55e52888 [vm, x64] Use short forms for object pool loads.
a66cae48fc [vm/aot] Dynamic invocation forwarders in AOT.
4400df4190 Convert strong_mode_test.dart to triple-slash comment style.
c1361963aa Update status files for tests failing due to #34724 and #34724
0039aff1e3 [test] Remove use of --error_on_bad_type and --error_on_bad_override.
ce08911515 [vm/compiler] Minor improvements to loop detection
a2cf88bee6 [vm] Fix sync-async stack navigation to handle inlined functions.
920d75f2ea Cleanup dartfix driver context
746034785d Update dartfix to separate targets from analysis roots
3d06427075 Fix MOVE_FILE test paths for Windows
```

* Remove use of await_is_keyword flag.

* Update license

Use an older version of SurfaceTexture.setOnFrameAvailableListener when running on pre-Lollipop devices (#6489)

Fixes https://github.com/flutter/flutter/issues/21730

https://skia.googlesource.com/skia.git/+log/6ba8c83234ca..04ac46135f23


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https://skia.googlesource.com/skia.git/+log/43a5497bf643..6ba8c83234ca


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https://skia.googlesource.com/skia.git/+log/311739b2dda1..43a5497bf643


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https://skia.googlesource.com/skia.git/+log/f5a09214740d..311739b2dda1


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https://skia.googlesource.com/skia.git/+log/a38ab3b094ba..f5a09214740d


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https://skia.googlesource.com/skia.git/+log/f40ddfabb7f0..a38ab3b094ba


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Provide a relative, per-image limit to the amount of memory
that's used to cache decoded image frames. Adds an overridable default
that developers can set to control how much memory images are allowed
to use decoded vs undecoded. The cap is set in flutter/flutter#22452.

Note that required frames are always cached regardless of the ratio cap,
because they're currently necessary for the GIF to animate. Previously
cached unessential frames are not cleared in response to the cache
hitting or exceeding the cap.

Addresses #20998 and #14344.

https://skia.googlesource.com/skia.git/+log/42137de2b2b8..f40ddfabb7f0


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Includes https://github.com/flutter/buildroot/pull/178, which enables icf on all android builds.

https://skia.googlesource.com/skia.git/+log/ef85d19100b1..42137de2b2b8


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* Missing dealloc method in FlutterEventChannel

This should fix our Google3 roll.

* Revert "Disable line_height tests on Windows (#6423)"

This reverts commit 191168ce.

* Revert "Implement ParagraphStyle.line_height and add tests for line_height and baselines. (#6417)"

This reverts commit 10b45405.

https://skia.googlesource.com/skia.git/+log/a41a74ac7994..ef85d19100b1


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This reverts commit 5340f422, relands single root filesystem that is needed for reusable platform kernel files, that is safe to land now since dart roll c048bec5 has the fix for previously broken dependency file generation.

* [dart] Roll dart to a50dfd66980ed5c9aef9851fcc57557fb607769c.

Changes since last roll:

```
a50dfd6698 Make --write-results not appear in reproduction commands
6c0b854477 [VM] Fix canonicalization of doubles: Two doubles are canonicalized to the same value if they are idencial()
f4ebebb37b Ignore runtime arguments in Fasta compiler configuration
1f916eb4e6 Mark a failing test
296c99632d Remove outdated information from pkg/kernel/README.md
6cd25af684 Configure defines correctly in config_import_test.dart
4e4e9ec74a Implement int-to-double literal conversion.
79e8b3d57f Make importing two libraries with the same name a warning
89d753588c [test] Speed up get_vm_timeline_rpc_test.dart.
de18295924 Adjust some status files for the new build configurations added to the buildbots.
219dc1be87 Rework the class hierarchy of StrongModeStaticTypeAnalyzer2Test.
dd7fec41ec Issue 34693. Use isOverrideSubtypeOf() to check that the implemented member is a valid override of the member from the super-constraint.
26cab0a4db [VM/IO] The exit code handler thread should not try to get the exit codes for detached child processes. Currently we end up in a tight loop in the exit code handler when detached processes are created.
6edc759798 [vm] Do not print if kernel isolate initialization is interrupted by VM shutdown.
c8bda47d88 [standalone] Fix memory leaks when kernel isolate fails to launch from an app snapshot.
33485f8ef2 [standalone] Fix leak when the kernel service produces a compile-time error.
7f531b5112 Analyzer: Fix missing errors during (a)sync(*) yield of void.
4486bf5f6b [vm/bytecode] Fix return value for several BigInt intrinsics
28780d34df Convert element.dart to triple-slash comment style.
b4b02a6bde [vm] Include bytecode in core-jit and app-jit snapshots
2a3a5c88c7 [dart2js] Omit empty parts in --fast-startup
f939503b50 [vm/aot] Make mixin deduplication transformation more robust wrt new mixins
5ea1d2fb20 Convert idl.dart to triple-slash comment style.
69550e2837 [dart/fuzzer] Increase #tests to 125
5b1444503e [dart/fuzzer] Minor output tweaks
41a9c38433 [vm, compiler] Shrink deopt stub and runtime call sequences.
f96362ccfd [dart2js] Smaller code by caching values
b2d22be0f3 [vm, arm64] Take advantage of Fuchsia's lack of signal handlers.
ca8809fcfa Don't use variableElement.computeConstantValue() in ConstantVisitor.
9d150c6443 Avoid a downcast error
0566f5fa27 Remove unnecessary test status lines
0e7ca953a9 [gardening] Skip timing out bigint tests on slow configurations (#31659)
127c3fed6c Handle data URIs in dart2js
```

https://skia.googlesource.com/skia.git/+log/817c01aecdc4..a41a74ac7994


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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://skia.googlesource.com/skia.git/+log/9b7bfd09106f..817c01aecdc4


Created with:
  gclient setdep -r src/third_party/skia@817c01aecdc4

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