Roll src/third_party/dart 69b5681546..6c81690c3a (38 commits)

dart-lang/sdk@6c81690c3a Flow analysis: add tests of things that shouldn't be promoted.
dart-lang/sdk@39a1baef6b Prepare to publish analyzer 0.38.4
dart-lang/sdk@3e71f286f6 [vm/fuzzer] Add auto minimization tool
dart-lang/sdk@5f74cc1e59 test for eof comment completions
dart-lang/sdk@b31e71e990 Revert "Issue 37608. Use instantiated FunctionType for tear-off(s)."
dart-lang/sdk@b325f8e965 Update checker.dart to use less Element.type
dart-lang/sdk@7235115f36 statement completion for expression bodies
dart-lang/sdk@2bd2392e2a Remove EngineTestCase.
dart-lang/sdk@f5ce531db3 [dartdevc] Allow ddc modular suite to apply SDK patch files from forked directory
dart-lang/sdk@c3bbd6a247 Added parser recovery for multiple variance modifiers.
dart-lang/sdk@9a683de40d [vm] Support testing assembly snapshots for ARM.
dart-lang/sdk@a2803a1b2d Add documentation for more diagnostics
dart-lang/sdk@bf361ebe19 Replace addTestFile()/resolveTestFile() pair with resolveTestCode().
dart-lang/sdk@bd1ca04b79 add meta dependency to kernel and front_end
dart-lang/sdk@7972c61aab fix detection of dart sdk lines in stack traces to recognize the ddk sdk
dart-lang/sdk@60328ca858 [vm] Restore _getHash/_setHash asm intrinsics
dart-lang/sdk@41dd8b522c [SDK] Further adjusts flags for dart2native.
dart-lang/sdk@9f0258f4b6 Include more information for 'Missing library'.
dart-lang/sdk@e034104f04 [cfe] Remove TypeEnvironment.*Type getters
dart-lang/sdk@463894f986 [cfe] Remove NullabilityBuilder.legacy
dart-lang/sdk@4209c50587 [cfe] Remove NullabilityBuilder.pendingImplementation
dart-lang/sdk@fdc34003e9 await futures
dart-lang/sdk@8cbc4f3982 [benchmark] Add support for benchmarking DDC.
dart-lang/sdk@b03d472e4c [cfe] Handle default values on extension methods
dart-lang/sdk@1ffbebe07a Revert "[cfe/vm] Enable prefer_final lints in pkg/vm"
dart-lang/sdk@12f6cbb7b1 [cfe] Thread nullability modifiers for TypeParameterTypes from source
dart-lang/sdk@13fcf27c25 [cfe] Implement library-specific NullabilityBuilder getters
dart-lang/sdk@db3bf8f509 [cfe] Preserve abstraction level in TypeDeclarationBuilder.buildType
dart-lang/sdk@adbfe7ce05 [cfe] Update the rules for TypeParameterType.nullability
dart-lang/sdk@f2743fceee Fix language_2/extension_methods/basic_static_extension_test
dart-lang/sdk@7b9bcd08b4 [cfe] Correctly substitute function types from extension on-clauses
dart-lang/sdk@2f7ad92ee4 [cfe] Handle null aware explicit extension application
dart-lang/sdk@763421a88e Add a first test of the InfoBuilder
dart-lang/sdk@9754f19eb6 [dart2js] dead code elimination can create GVN candidates
dart-lang/sdk@0fe9634425 Skip wasm tests on dart2js
dart-lang/sdk@6d86779288 Make the NNBD fork not stomp on the other build.
dart-lang/sdk@35748514c7 [ VM / Service ] Added additional tests for package:vm_service and fixed service bugs
dart-lang/sdk@79cc54e519 [kernel] Avoid trampling sources when loading split components.

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': '69b5681546c68ab85e2ce6d3e7b92ed7d113e7c1',
+  'dart_revision': '6c81690c3adad0aecb00cd1657ac9b2a3fb467e8',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py

ci/licenses_golden/licenses_third_party

-Signature: 4549cedf418f0654c9ad410aef323371
+Signature: 962653711382f26bed93589a7fb0b856
 
 UNUSED LICENSES: