Roll Dart SDK from 835da00aa6b5 to b321d01eec78 (1 revision) (#24808)

DEPS

@@ -35,7 +35,7 @@ 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': '835da00aa6b5d9e78a738546b6622e2b27edddda',
+  'dart_revision': 'b321d01eec78e285682d363ad383a5e1a061d9ef',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -249,7 +249,7 @@ deps = {
    Var('dart_git') + '/external/github.com/xxgreg/mustache@664737ecad027e6b96d0d1e627257efa0e46fcb1',
 
   'src/third_party/dart/third_party/pkg/oauth2':
-   Var('dart_git') + '/oauth2.git@9b8ee16d0dd4538173422a01532f33fc8be2548f',
+   Var('dart_git') + '/oauth2.git@7cd3284049fe5badbec9f2bea2afc41d14c01057',
 
   'src/third_party/dart/third_party/pkg/path':
    Var('dart_git') + '/path.git@407ab76187fade41c31e39c745b39661b710106c',

ci/licenses_golden/licenses_third_party

-Signature: 71081d7b2f29831d5e2361910096e8b3
+Signature: b5f00a9a7a489c85511d83863985c149
 
 UNUSED LICENSES: