Roll src/third_party/dart 5b5f34f..603fd78 (11 commits) (flutter#13991)

dart-lang/sdk@603fd7881f (ddc) Fix deps tracking for the ddc sdk.
dart-lang/sdk@6294c73f3e Deprecate 'typeSystem' parameter for InheritanceManager3.
dart-lang/sdk@f196196779 Add modification counts and instructions to all pages; add an index page
dart-lang/sdk@5c111a217c Update package:watcher in SDK
dart-lang/sdk@f3102ab0cf [vm] Fix late final field edge case
dart-lang/sdk@c58d263729 [analysis_server] Handle directory watcher closed on windows.
dart-lang/sdk@a87c563ecb [test_runner] Make update_static_error_tests work on Windows
dart-lang/sdk@fc47953a1e [dartfuzz] Adding library methods for TypedData types
dart-lang/sdk@72f461b116 Update FunctionExpression return type inference to NNBD.
dart-lang/sdk@c9165dc3cd Add 'sdkVersion' field to 'server.log' messages.
dart-lang/sdk@e304d34cea Use the corresponding TypeProvider(s) to create legacy / nonNullableByDefault TypeSystem.

Author: bkonyi

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': '5b5f34f2e6e047edbd4280a5d9c906c6399280e8',
+  'dart_revision': '603fd7881f3ccc4e4ba0f78d6dedc9172025c36a',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -99,7 +99,7 @@ vars = {
   'dart_tflite_native_rev': '3c777c40608a2a9f1427bfe0028ab48e7116b4c1',
   'dart_typed_data_tag': '1.1.6',
   'dart_usage_tag': '3.4.0',
-  'dart_watcher_rev': '0.9.7+12-pub',
+  'dart_watcher_rev': '0.9.7+13',
   'dart_web_socket_channel_tag': '1.0.9',
   'dart_yaml_tag': '2.2.0',
 

ci/licenses_golden/licenses_third_party

@@ -1,4 +1,4 @@
-Signature: 0e0f83fa7087cb4e19471dbd2dd2a197
+Signature: d63acce5056fe19ded3a36abc2b1ab6e
 
 UNUSED LICENSES: