Roll src/third_party/dart bb4a880777..c167cd3572 (9 commits)

c167cd3572 [VM] Experimental flags in dartkp tests
759234b05a [vm] Fix disassembler test after f496e538f4587f29562e161ca6b06f169396f499
bb560bb233 [ VM / dart:io ] Adding to a closed IOSink now throws a StateError
983b77dda7 Remove unused argument allowNullableDereference
f8fef94243 Authomatically add dependencies from pubspec.yaml files.
169331abb1 [vm] Misc timeline tweaks.
874f9d0bdf Refactor for statement parsing
9043e5be44 [vm, gc] Remove --gc_at_alloc.
27760001f5 [vm] Fix build after f496e538f4587f29562e161ca6b06f169396f499

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': 'bb4a8807777b734949802f9fb903aad292c26eed',
+  'dart_revision': 'c167cd35723661c6f4bd8557043c231822e28d2d',
 
   # 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: c1372293a8ad7d13e9db0872c55f25d7
+Signature: 505a972eaaab59d439663837c6ae1f5d
 
 UNUSED LICENSES: