Roll src/third_party/dart f17d0563fa..2bc0f49c00 (10 commits)

dart-lang/sdk@2bc0f49c00 [vm, gc] Add timeline event for growth policy updates.
dart-lang/sdk@86ad613bf7 [vm/fuzzer] Enable package:pedantic analysis options
dart-lang/sdk@0328e8a7b6 sort ForwardingListener and ForwardingTestListener
dart-lang/sdk@aeb5e732fd split endClass/Mixin/ExtensionFactoryMethod event
dart-lang/sdk@e5b0ff494b Adding an offset field to TokenDetails to return token offset as part of listTokenDetails
dart-lang/sdk@35f8a8bf00 Gracefully degrade when FunctionTypeAlias uses FieldFormalParameter.
dart-lang/sdk@78bd2bbaca [test] Re-enable background compilation in debug mode.
dart-lang/sdk@f2ab9478ee [vm/bytecode] Avoid extra DebugCheck in variable declaration
dart-lang/sdk@10c212f910 Make package:expect NNBD agnostic
dart-lang/sdk@d61daa79d3 Add more specific warnings to analyzer for @required on parameters

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': 'f17d0563fa181092f6a4e0855d1a9b7164d31eb2',
+  'dart_revision': '2bc0f49c00a9537121154d858604934ec04477b6',
 
   # 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: 1a85274dab3115be0daf63191914b48e
+Signature: b8bf3e400659b0df6a9514cfccde17ef
 
 UNUSED LICENSES: