Roll src/third_party/dart eff5548a684a..7079c49b054e (1 commits) (#17165)

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': 'eff5548a684a37239ed009a59dc75e1c1542b1a2',
+  'dart_revision': '7079c49b054e211b6efac6964574e65635e5da43',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py