| Index: runtime/observatory/tests/observatory_ui/mocks/objects/retaining_path.dart | 
| diff --git a/runtime/observatory/tests/observatory_ui/mocks/objects/retaining_path.dart b/runtime/observatory/tests/observatory_ui/mocks/objects/retaining_path.dart | 
| index 6f6c7335d44cbab99da2e29e741c992c8b18083d..36b7b68e02f13c369558aa055fd598f995481dde 100644 | 
| --- a/runtime/observatory/tests/observatory_ui/mocks/objects/retaining_path.dart | 
| +++ b/runtime/observatory/tests/observatory_ui/mocks/objects/retaining_path.dart | 
| @@ -16,7 +16,9 @@ class RetainingPathItemMock implements M.RetainingPathItem { | 
| final int parentListIndex; | 
| final int parentWordOffset; | 
|  | 
| -  const RetainingPathItemMock({this.source: const InstanceRefMock(), | 
| -                               this.parentField, this.parentListIndex, | 
| -                               this.parentWordOffset}); | 
| +  const RetainingPathItemMock( | 
| +      {this.source: const InstanceRefMock(), | 
| +      this.parentField, | 
| +      this.parentListIndex, | 
| +      this.parentWordOffset}); | 
| } | 
|  |