Roll src/third_party/dart b5aeaa6796...966038ef58 (flutter#9708)

dart-lang/sdk@966038ef58 [analyzer] update package:analyzer_plugin wrt some lints
dart-lang/sdk@cab2ca275d Update Socket to be a Stream<Uint8List>
dart-lang/sdk@a85f6ff348 [vm/compiler] Do not create intersection types in type propagation.
dart-lang/sdk@48e9366923 fix a typo in the vm service spec
dart-lang/sdk@aee65636ba Add constructors to `Stream` which creates single data or error event streams.
dart-lang/sdk@d914839ce6 Add tests for diagnostic docs
dart-lang/sdk@33a5745c49 [vm/ffi] Add missing free() to structs_test.dart
dart-lang/sdk@1c9408f2ba Update doc link to point at ECMAScript 2018.
dart-lang/sdk@79a5257155 Revert "Increase analyzer cache size to 512MB."
dart-lang/sdk@774a392aa3 Add '--benchmarking-x' flag
dart-lang/sdk@db1abd0674 Initial and partial summary support for extensions
dart-lang/sdk@588ab11ecc Unify two error codes that are essentially identical
dart-lang/sdk@fcc72ad83f [vm/ffi] Support FFI in AOT (excluding callbacks).
dart-lang/sdk@f0d6f119de Make nested_generic_closure_test work for dart2js
dart-lang/sdk@0a538a4e62 Avoid truncating shift in lib_2/math/low_test
dart-lang/sdk@8673b5e491 Avoid non-web-integer literals in corelib_2/num_sign_test
dart-lang/sdk@f0da490328 Avoid non-web integer literal in corelib_2/growable_list_test
dart-lang/sdk@7b13c45bcc Fix negation precedence and non-web-integers in corelib_2/int_xxx_tests
dart-lang/sdk@b14f3accbb [fasta] Thread nullability through the subtyping methods in fasta
dart-lang/sdk@c0932a8af6 Move annotated_code_helper.dart into front_end.
dart-lang/sdk@cea3d85ade Rename statment -> stmt in testing annotations.
dart-lang/sdk@ee696f2c35 In flow analysis tests, annotate `doesNotComplete` on functions rather than bodies.
dart-lang/sdk@c1ca599353 Adapt flow and promotion tests to make use of CFE testing framework.
dart-lang/sdk@13251657c6 Fix compile errors in flow analysis and type promotion test cases.
dart-lang/sdk@14ccc77a40 Use decoder.bind(stream) instead of stream.transform(decoder)
dart-lang/sdk@f41d6de111 [corelib_2] Split date_time_test to increase coverage
dart-lang/sdk@9bccb7ba4a Rereland "[vm/ffi] SimDBC on Arm64 Android"
dart-lang/sdk@0b1ec2d937 List.removeLast() docs error occurs if empty
dart-lang/sdk@4ceefdbe4c Rename ElementId to MemberId and use member: prefix instead of element:
dart-lang/sdk@aeee6139f5 [cfe] Extract Id, DataRegistry and DataExtractor from dart2js
dart-lang/sdk@708e919733 Consistently format breaking changes
dart-lang/sdk@a4f34f4a51 expired experimental flag command line message
dart-lang/sdk@b8a8cfdcda [cfe] Use InvalidExpression for await on non-async context.
dart-lang/sdk@0272c1d863 Split language_2/truncdiv_test
dart-lang/sdk@4babccd988 Fix non-web integer literals in corelib_2/bigint_test
dart-lang/sdk@738d9f9666 Avoid non-web integer literal in language2/list_test

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': 'b5aeaa67960c03e528b76c5cfa55059a058de34e',
+  'dart_revision': '966038ef5827987d30a5091ec04c6a2a4e04d9ed',
 
   # 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: eba9f5f513005a7e6179d4faf3731252
+Signature: 6e345aeac70f493589c1c1ecc5f2350a
 
 UNUSED LICENSES:
 
@@ -4614,6 +4614,7 @@ FILE: ../../../third_party/dart/runtime/observatory/web/favicon.ico
 FILE: ../../../third_party/dart/runtime/observatory/web/index.html
 FILE: ../../../third_party/dart/runtime/observatory/web/third_party/trace_viewer_full.html
 FILE: ../../../third_party/dart/runtime/observatory/web/timeline.html
+FILE: ../../../third_party/dart/runtime/vm/compiler/ffi_dbc_trampoline_arm64.S
 FILE: ../../../third_party/dart/runtime/vm/compiler/ffi_dbc_trampoline_x64_linux_mac.S
 FILE: ../../../third_party/dart/samples/ffi/sqlite/docs/lib/scenario-default.svg
 FILE: ../../../third_party/dart/samples/ffi/sqlite/docs/lib/scenario-full.svg