Roll src/third_party/dart 50b0d85804..fee615c5a5 (4 commits)

fee615c5a5 consolidate multiple modifier error codes
6aee4f390b Make analyzer's File.readAsBytesSync() impls return Uint8List
2878bfde6c [vm/ffi] Fix ffi trampoline class finalization
85c28b804d Check LSP support for workspace/applyEdit before giving CodeActions that require it

DEPS

@@ -31,7 +31,7 @@ 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': '50b0d85804d2bed16fda74677aa650c4d9e523c1',
+  'dart_revision': 'fee615c5a51bb2ace4f13db2fcde1b02eb039488',
 
   # 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: f8eb0bd2f645f5aef1d8488c249be1f2
+Signature: 48c42235af26a81fc9167483f4aea348
 
 UNUSED LICENSES: