Roll src/third_party/dart 313bf285dfe6..7a94d1d7f1f2 (1 commits) (#18461)

diff --git a/DEPS b/DEPS
index 6221746..7a71a8e 100644
--- a/DEPS
+++ b/DEPS
@@ -34,7 +34,7 @@
   # 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': '313bf285dfe691340c5b184cb2b5ae851ba068ed',
+  'dart_revision': '7a94d1d7f1f24b2c5bb92ee8b4dec05d6a0ead0f',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py