Roll src/third_party/dart fe666ce592cb..862d5012ae9c (48 commits) (flutter/engine#15672)

https://dart.googlesource.com/sdk.git/+log/fe666ce592cb..862d5012ae9c

git log fe666ce592cb..862d5012ae9c --date=short --first-parent --format='%ad %ae %s'
2020-01-15 johnniwinther@google.com [cfe] Handle explicit opt-out in nnbd-not-enabled message
2020-01-15 johnniwinther@google.com [dart2js,cfe] Move filenames.dart to _fe_analyzer_shared
2020-01-15 dacoharkes@google.com [vm/ffi] Migrate dart:ffi to nnbd
2020-01-15 jensj@google.com [vmservice] Make sure one can request several heap snapshots
2020-01-15 johnniwinther@google.com [cfe] Insert member signatures for nnbd aware inheritance
2020-01-15 jwren@google.com Special case in completion_metrics.dart, some keyword suggestions come out of the DAS completion engine such as "import '';", instead of "import"
2020-01-15 scheglov@google.com Fix failing tests on unittest-asserts-release-win after analyzer Packages change.
2020-01-15 vsm@google.com Reland "De-dup js_util between ddc and dart2js"
2020-01-15 scheglov@google.com Downgrade receiver of type Never to hint.
2020-01-15 bkonyi@google.com [ VM / dart:vmservice ] Migrate dart:vmservice to NNBD, cleanup outdated code
2020-01-15 rmacnak@google.com [vm] Update dart:mirrors for Dart 3.
2020-01-15 pquitslund@google.com completions for yield statements
2020-01-14 liama@google.com [vm, test] Copy dart:wasm tests from lib_2/wasm to lib/wasm
2020-01-14 pquitslund@google.com closure arg code completion
2020-01-14 jwren@google.com API improvement in completion_metrics.dart to introduce ExpectedCompletion.matches(CompletionSuggestion)
2020-01-14 nshahan@google.com [dartdevc] Update NNBD subtype tests to avoid wrapping legacy types
2020-01-14 jwren@google.com Add completion kind and element kind assertions on matching expected completions from the analysis server in completion_metrics.dart
2020-01-14 scheglov@google.com Issue 40057. Fix for Never as setter receiver.
2020-01-14 sra@google.com [dart2js] Remove unused method
2020-01-14 jwren@google.com This is a failing test for http://dartbug.com/37907 using the new DartCompletionManagerTest
2020-01-14 paulberry@google.com Pass TypeSystem and TypeProvider into TypedLiteralResolver.
2020-01-14 paulberry@google.com Migration: wire up elimination of dead if branches to FixBuilder.
2020-01-14 paulberry@google.com Migration: Add logic to FixAggregator to eliminate dead "if" branches.
2020-01-14 paulberry@google.com Migration: add the ability to create EditPlans that remove source code.
2020-01-14 paulberry@google.com Migration: Add tests for the algorithm used by EditPlaner.passThrough.
2020-01-14 paulberry@google.com Migration: Remove _incorporateParent method.
2020-01-14 jwren@google.com Nit completion_metrics.dart cleanup from comments in https://dart-review.googlesource.com/c/sdk/+/131600
2020-01-14 scheglov@google.com Issue 39059. Check for minor / major version overflow.
2020-01-14 leafp@google.com Convert late field syntax test to static error test
2020-01-14 asiva@google.com [Dart/CLI] : Migrate dart:cli for NNBD.
2020-01-14 scheglov@google.com Extract AssignmentExpressionResolver.
2020-01-14 liama@google.com [vm, library] Migrate dart:wasm to NNBD
2020-01-14 jwren@google.com Improve the String output of the double percents.
2020-01-14 jwren@google.com Split completion_metrics.dart into two files.
2020-01-14 scheglov@google.com Use analyzer Packages in analyzer_cli.
2020-01-14 askesc@google.com [vm] Fix some issues with round trip serialization.
2020-01-14 sjindel@google.com Revert "[vm/aot] Only patch call-sites to monomorphic entry-points when the receiver is proven to be a heap object."
2020-01-14 johnniwinther@google.com [cfe] ClassHierarchyBuilder cleanup before adding member signatures
2020-01-14 johnniwinther@google.com [cfe] Handle type variable typed late fields and locals
2020-01-14 johnniwinther@google.com [cfe] Report error on `await` in late local initializer
2020-01-14 sjindel@google.com [vm/aot] Only patch call-sites to monomorphic entry-points when the receiver is proven to be a heap object.
2020-01-14 sjindel@google.com [vm] Clone boxes for unboxed numeric fields upon rematerialization.
2020-01-14 dacoharkes@google.com [vm/ffi] Test alignment of small stack arguments
2020-01-14 johnniwinther@google.com [cfe] Add canonical way to detect the synthesized redirecting factory field
2020-01-14 lrn@google.com Fix bug in NNBD stream controller.
2020-01-14 dmitryas@google.com [cfe] Add more tests for compile-time errors related to Null Safety
2020-01-14 jwren@google.com Refactor the 3 implementations of Comparator<CompletionSuggestion> down to a single implementation.
2020-01-14 sra@google.com List copy benchmark

Created with:
  gclient setdep -r src/third_party/dart@862d5012ae9c

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dart-sdk-flutter-engine
Please CC dart-vm-team@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

Bug: None
Tbr: dart-vm-team@google.com

DEPS

@@ -34,7 +34,7 @@ vars = {
   # Dart is: https://github.com/dart-lang/sdk/blob/master/DEPS.
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': 'fe666ce592cbf7d31184c0f1275a1658a443c1dd',
+  'dart_revision': '862d5012ae9ceb43282ec23034e8031d06f8a1f9',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py