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* Roll the Dart VM.

c95617b19c Add a release note about the VM going sync-async
05f11aa74c [kernel] Account for defaultType in some of the Kernel visitors
c39c2c8ac1 Handle type variables in optional function typed parameter in jsinterop methods
a4af44b470 [VM] Do not invoke any functions during AOT compilation
5be73cd166 Make debug printing of function types more robust.
6054cb3e1f CompilerContext always expects a Future now
6213303e65 Fix some runtime check failures in tests
d17ec7c131 Move inference data from JClosedWorld to GlobalTypeInferenceResults.
6fcc68bee3 Adjust test status.
fe21518df8 Improve literal list recovery
134e00fd73 Treat 64 bit ints as unsigned until conversion to JS.
b375d69800 [observatory] When the VM is forwarding events to the Android or Fuchsia system tracers, link to the document describing how to use them.
edb1642709 [vm] Repair interpreter build.
a9fef15ff3 Add FileResult and AnalysisDriver.getFileSync().
787a43ec78 [vm] Fix some missing private name mangling in the kernel reader.
1cf348b29f Mark enum_private_test/02 as pass, crash
cc1a817faa Use ZX_THREAD_STATE_BASIC on state output of ZX_INFO_THREAD.
4e0e72a65f Fix map_insert_remove_oom_test.
8421e69fbb [js_runtime] Make _checkLength more likely to be inlined
b66dd3d456 Stop using generic comment syntax in observatory.
b667be4861 Fix source maps strong mode runtime failure in dart2js.
7b972a653b [vm/linearscan] Account for definitions with no SSA name when processing PairLocation outputs.
09fc582bfd Fix EvalExpression test.
f2883d1b4f Fix test error message expectation on Windows.
8bfbce33f1 Mark cc/Profiler_CodeTicks as failing on Windows, dartk x64 config
a8c2263d3f Issue 33336. AnalysisDriver.discoverAvailableFiles() should notify the scheduler that there is work to do.
b7493b663e [vm/inliner] Inline small int convertors.
6b71414296 [Test status] Update status of several triaged lib_2/mirrors tests
1f03109200 Proposed replacement for SourceFactory
60631b0944 Remove unnecessary casts from observatory.
bfa8be887a Extending dartLangSpec.tex with super-bounded types and variance.
daee781179 Revise beginTypeVariable event in event sequence
e0ca1514a2 Mark test as failing.

* Update hash.

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https://skia.googlesource.com/skia.git/+log/2d7678d..18562b8

Created with:
  gclient setdep -r src/third_party/skia@18562b8

The AutoRoll server is located here: https://skia-flutter-roll.skia.org

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.

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* Roll dart to a5e41681e55d1e74684bfff530218db556d77ee8.

* Update license

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This includes the following commits

  dart-lang/sdk@1fe279d859 (origin/master, origin/HEAD) Fix _FutureListener.handleError() to use explicit type for Zone.runBinary
  dart-lang/sdk@a9257d05fb [vm] Prepare status files for dartk reload/rollback builders (#33126)
  dart-lang/sdk@6ac6baae8e Record interfaceTargets for calls on dynamic receivers
  dart-lang/sdk@82755aa303 Rename ClosedWorld to JClosedWorld and merge it with ClosedWorldRefiner
  dart-lang/sdk@b58cc36ddc Extract KClosedWorld from ClosedWorld.
  dart-lang/sdk@9a193853d4 [VM] Mark a few tests as passing
  dart-lang/sdk@5c2cec0e19 Make _FilesReferencingNameTask faster by using maintained FileSystemState.knownFiles list.
  dart-lang/sdk@5269e21913 Fix for MockSdk on Windows.
  dart-lang/sdk@d0b28d2040 Fix analysis_server tests on Windows.
  dart-lang/sdk@9d83013040 Use known FileState from FileSystemState directly.
  dart-lang/sdk@b3b528648b Discover all SDK libraries.
  dart-lang/sdk@41e1d2cc28 [dart2js] Fix --csp
  dart-lang/sdk@56424f08a8 [js_runtime] Test for JavaScriptFunction type tests.
  dart-lang/sdk@5f9fcd0bbc [vm, x64] Remove embedded address from the implementation of math.min/max.
  dart-lang/sdk@025cee6f1f Skip tests of snapshot determinism on Windows.
  dart-lang/sdk@6ba8c711fa Observatory strong mode fix: expand the class hierarchy for debug events.
  dart-lang/sdk@f3502f9051 Fix bug in RTI optimization
  dart-lang/sdk@d319d3eda4 [vm/kernel/bytecode] Do not generate bytecode for external (native) members
  dart-lang/sdk@7246d2e759 Fix exception in fix processor (issue 33312)
  dart-lang/sdk@b19560e7ad Implement stubs for the remaining converted generators
  dart-lang/sdk@b7266fa3b3 [vm/kernel/bytecode] Support async/async*/sync* in bytecode generator
  dart-lang/sdk@c6cf61752e Update PluginWatcherTest to the fact that async functions start running synchronously.
  dart-lang/sdk@e1549df93f Fix regression introduced in 'Use AbstractValue in most of ssa'
  dart-lang/sdk@184df3aee0 Make AnalysisServer.getAnalysisResult() sync to avoid changing behavior between Dart1 and Dart2.
  dart-lang/sdk@99a5f149ac [vm] Enable type stubs based type checks in JIT mode for some types.
  dart-lang/sdk@90c4215af4 [vm] Adds full GC check on all external allocations
  dart-lang/sdk@bef7cd354f Observatory strong mode fix: Use .nodes= instead of .children= to accommodate text nodes.
  dart-lang/sdk@72aae537a2 Observatory strong mode fix: clean up port mocking.
  dart-lang/sdk@312f02532a [js_runtime] JavaScriptFunction matches any Dart function type
  dart-lang/sdk@c8860b4ca2 Remove all uses of --limit-ints-to-64-bits VM option
  dart-lang/sdk@5db95fbb61 Upgrade mockito to latest version.
  dart-lang/sdk@1bc9b8d00c Mark ContextRoot.pathContext constructor argument as required.
  dart-lang/sdk@b7bc0d06c4 Fix state machine in _DiscoverAvailableFilesTask.perform
  dart-lang/sdk@2c44dc11c7 Improve type variable recovery
  dart-lang/sdk@789ceee184 Update version number in DEPS for dart2js_info pkg
  dart-lang/sdk@0629e3afa5 [VM] Fix vm/cc/DartAPI_TypeGetParameterizedTypes test
  dart-lang/sdk@e18fd7c3e7 Remove the test for getNavigation() and removing the analysis context.
  dart-lang/sdk@2a545d7153 Initial implementations for some of the generator methods
  dart-lang/sdk@5f42fe5822 Simplify DartCompletionContributorTest.computeSuggestions() async behaviour.
  dart-lang/sdk@f6ece48aba Fix the test that want to run async code to be async.
  dart-lang/sdk@e9a60098bb [VM] Use UserVisibleName for types in error messages reported to users to make the error more clear. This fixes the case in issue 33303.
  dart-lang/sdk@cb07f74f4b Clean up some of analyzers generators based on feedback
  dart-lang/sdk@e9818eefd8 Update analyzer status about type parameters on constructors.
  dart-lang/sdk@6f68bec1bc TBR: Typos fixed
  dart-lang/sdk@545ad130a2 Fix a couple of bugs in the analyzer forest implementation
  dart-lang/sdk@85b4a799eb Search references to elements and subtypes in all known (and discovered) files.
  dart-lang/sdk@4fb6395058 Report error when a constructor has type parameters.
  dart-lang/sdk@315a186dc4 Better test error handler argument types.
  dart-lang/sdk@0aadba1189 Revert "[vm] Enable type stubs based type checks in JIT mode for some types."
  dart-lang/sdk@4be50d6fa1 [vm] Enable type stubs based type checks in JIT mode for some types.
  dart-lang/sdk@1d8bef0d89 Remove class TypeInferenceEngineImpl
  dart-lang/sdk@dd83e698d8 Add 64-bit integer semantics to the specification.
  dart-lang/sdk@a10eda4988 update dart2js status files
  dart-lang/sdk@6458b5da2f Always include added files into the list of files to discover.
  dart-lang/sdk@c984e63f61 Skip tests of snapshot determinism in checked mode.
  dart-lang/sdk@99dadf4d7f Remove unneeded (and incorrectly typed) mock step
  dart-lang/sdk@f87933d845 Introduce tests specific to behaviors of FunctionType.
  dart-lang/sdk@64cfdb4cc6 Remove _explicitTypeParameters and substitute4 from FunctionTypeImpl.
  dart-lang/sdk@b930ae19b1 Fix regression in deferred loading (part2)
  dart-lang/sdk@a0c4ac14c1 Omit redundant bounds check for Dart2 on typed setters/getters.
  dart-lang/sdk@2ad29cbd15 Remove unnecessary uses of toExpression
  dart-lang/sdk@7a76a40438 Add several other generators
  dart-lang/sdk@483c42b899 Switch dart2js to use dart 2 vm.
  dart-lang/sdk@f5d991e6a1 Support extracting selected statements into a new Flutter widget.
  dart-lang/sdk@89c2da2846 Add generator for unlinked names
  dart-lang/sdk@c911a1bef6 Clean up additional dart2js strong mode runtime error and don't add method type variable in dart 1 version.
  dart-lang/sdk@9a02f5bf4d [vm/kernel] Fix bugs with expression evaluation in debug mode.
  dart-lang/sdk@0aad13db00 Revert 'Copy @failingTest annotations to mixin applications.'
  dart-lang/sdk@41c5da8919 [vm] Fix non-reproducibility of VM builds.
  dart-lang/sdk@e8659b0f28 Remove skipTypeVariables

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