Manual roll of Dart e68ca9b...fa43799 (#13756)

dart-lang/sdk@fa43799461 [vm/bytecode] Check number of type arguments in non-generic closures
dart-lang/sdk@a01c3b464e Use TypeParameterElement(s) as free variables in FunctionType.toString().
dart-lang/sdk@9c4c49d9ee [vm/benchmarks] Reduce number of isolate spawn runs from 5 to 3.
dart-lang/sdk@e3aac9e25d Check more in LegacyTypeAsserter.
dart-lang/sdk@0957c13054 Check for null before dereferencing constraint text.
dart-lang/sdk@fd9f79c25d [cfe] Handle deferred explicit extension access
dart-lang/sdk@7c78ab75a5 Migration: allow already-migrated libraries to be opted in.
dart-lang/sdk@6317779f9b Simplify TestTypeProvider constructor.
dart-lang/sdk@7e8e66016a Migration: do not use `always` or `never` in already-migrated types.
dart-lang/sdk@e4a60912a7 [cfe] Use library's NNBD opt-in status while serializing supertypes
dart-lang/sdk@ee2efe8e58 [CFE] Add more incremental compiler tests, prepare for better invalidation strategy
dart-lang/sdk@5eaccc20ba [CFE] Incremental test suite now has expect files
dart-lang/sdk@ec0d042955 [infra] Support multiple named configurations in test infrastructure
dart-lang/sdk@b334ea8320 [dart2js] new-rti: experiment - fault in '$is' test
dart-lang/sdk@7a45228584 Use ElementsTypesMixin in TypeSystem tests.
dart-lang/sdk@ec519c3d16 [vm/aot] Disable bytecode in AOT compilation pipeline
dart-lang/sdk@f4780a6450 [vm] Late modifier for non-static final fields.
dart-lang/sdk@23770fcc6c [vm, gc] Increase HeapPage size to 512k; increase max heap size to 32GB.

Author: a-siva

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': 'e68ca9b652acdb642668a6acb5f630d5be6c03da',
+  'dart_revision': 'fa4379946109467c8a48f20f19d83d7c72968a3e',
 
   # 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

@@ -1,4 +1,4 @@
-Signature: d45bc36638d83a8d56574a59410d78d8
+Signature: 2c3233e5e7d7eec7f5757567f2cd61a7
 
 UNUSED LICENSES: