A WIP destination for golden file testing.
See b/147830720.
TIP: Need to update all of the tests quickly? Use:
$ third_party/dart_src/angular/goldens/update_all.shCurrently when adding a new a.dart file, you must add a sibling
a.template.dart.golden and a.js.golden file, otherwise the resulting
golden_test macro will fail saying those files are not found.