Roll src/third_party/dart e736495eb7f0..f144d5fdca56 (31 commits)

[skia-flutter-autoroll]

https://dart.googlesource.com/sdk.git/+log/e736495eb7f0..f144d5fdca56

git log e736495..f144d5f --date=short --first-parent --format='%ad %ae %s'
2020-04-03 srujzs@google.com [dart:html] Migrate css tests to NNBD
2020-04-03 srujzs@google.com [dart:html] Migrate indexeddb tests to NNBD
2020-04-03 srujzs@google.com [dart:html] Migrate custom_element tests to NNBD
2020-04-03 srujzs@google.com [dart:html] Migrate fileapi tests to NNBD
2020-04-03 srujzs@google.com [dart:html] Migrate html js tests to NNBD
2020-04-03 srujzs@google.com [dart:html] Migrate element tests to NNBD
2020-04-03 srujzs@google.com [dart:html] Migrate custom tests to NNBD
2020-04-03 liama@google.com [nnbd/libs] Fixing more strong mode tests
2020-04-03 paulberry@google.com Prepare to publish analyzer 0.39.5
2020-04-03 scheglov@google.com Update MockSdkElements to create only migrated SDK.
2020-04-03 kustermann@google.com [vm/async] Run pkg/front_end/tool/update_expectations.dart for CFE failures
2020-04-03 jwren@google.com Bug fix in the completion_metrics.dart visitor by fixing the element kind in the instance creation expressions
2020-04-03 mehmetf@google.com [dart:_http] Allow the embedder to prohibit HTTP traffic.
2020-04-03 paulberry@google.com Migration: remove redundancy from NullabilityFixKind enum.
2020-04-03 paulberry@google.com Migration: add support for a late hint with spaces
2020-04-03 paulberry@google.com Migration: handle /*!*/ hint after more expression types.
2020-04-03 alexmarkov@google.com [cfe] Add runtime/tests/vm/dart to the list of opt-out tests
2020-04-03 jakemac@google.com add --dartdevc-module-format argument to frontend_server
2020-04-03 alexmarkov@google.com [tests/nnbd] Fix lib/isolate/function_send* tests for strong mode
2020-04-03 askesc@google.com [vm] Fix unsound code motion through checks.
2020-04-03 jensj@google.com [analyzer] Regression test for constructor with operator name
2020-04-03 athom@google.com [co19] Roll co19 to 031c88444007120a4fb5c920203a040443c538be
2020-04-03 sstrickl@google.com [vm/aot] Walk any parameterized functions of TypeParameters.
2020-04-03 johnniwinther@google.com [cfe] Handle covariant operator == parameter
2020-04-03 athom@google.com [homebrew] Modify the version string when updating the version
2020-04-03 kustermann@google.com [vm/async] Make async transformer use typed variables, make async patch use function types
2020-04-03 eernst@google.com Moved several classes with compile-time errors to 3_error_test
2020-04-03 jensj@google.com [analyzer] Fix crash with _OperatorName in Constructor
2020-04-03 jensj@google.com [CFE] Fix crash with constructor recovery; add error recovery tests
2020-04-03 jensj@google.com [CFE] Sort status files
2020-04-03 sigmund@google.com [ddc, dart2js] Fix signature of js_util APIs expecting a constructor.

Created with:
gclient setdep -r src/third_party/dart@f144d5fdca56

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
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is aware of the problem.

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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