Roll src/third_party/dart 2e99a418a0..97bb624cfe (5 commits)

dart-lang/sdk@97bb624cfe [vm] Rebuild type testing stubs if their fast path starts failing
dart-lang/sdk@f46e5ee44e [vm/fuzzer] Make num type non instantiable
dart-lang/sdk@7e99f49629 [vm/compiler] general rbit utilities
dart-lang/sdk@9e738b94b4 [vm] Remove #include from elf_loader.h so it can be used imported in Flutter.
dart-lang/sdk@bb342ec83f Fix a test breaking the windows bot

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': '2e99a418a0b5287d0bf98e2eb0a46b18c8d372e2',
+  'dart_revision': '97bb624cfebd31842a6abeb7781a49f66b9845c3',
 
   # 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: 463eee16468aec6365688191c632b9a4
+Signature: 4c48578e90ae4c85ccb78bf2abdcd7fc
 
 UNUSED LICENSES: