Roll src/third_party/dart 05bba46..e94e797 (5 commits)

e94e797 Fix flow analysis test for ForStatement2
0374ba1 Coalesce ForStatementBase with ForStatement2Impl.
4cd3093 Prepare visitors for UI-as-code rework.
cfac26e Deprecate `Expression.precedence`.
4abf592 Fix ForLoop2 support in reference collector

Author: bkonyi

DEPS

@@ -31,7 +31,7 @@ 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': '05bba46133f9dd349dac2e83ca3bf81b25c2d749',
+  'dart_revision': 'e94e797d7b65bae5e036161c6ad62a7894a07a82',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py