Roll src/third_party/dart 2e438d1baffc..a53d336b9fd4 (4 commits) (#17967)

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': '2e438d1baffcc8844c1b068a262ee57ba89e52c8',
+  'dart_revision': 'a53d336b9fd4bbb415d2f1e3f4c653aa107f31c7',
 
   # 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: 346ec293b40f222e882a583e0598ac4e
+Signature: 0dc4aafe22c57f226f7abdc4a93d2c53
 
 UNUSED LICENSES:
 
@@ -7760,6 +7760,7 @@ FILE: ../../../third_party/dart/runtime/vm/field_table.cc
 FILE: ../../../third_party/dart/runtime/vm/field_table.h
 FILE: ../../../third_party/dart/runtime/vm/heap/tlab.h
 FILE: ../../../third_party/dart/runtime/vm/port_set.h
+FILE: ../../../third_party/dart/runtime/vm/tagged_pointer.h
 FILE: ../../../third_party/dart/runtime/vm/timeline_macos.cc
 FILE: ../../../third_party/dart/runtime/vm/type_testing_stubs_test.cc
 FILE: ../../../third_party/dart/runtime/vm/type_testing_stubs_test.h