9453ff5273
Tests the various checks needed for @JSExport and createDartExport, with and without inheritance. Also renames the mock directory to export. Change-Id: Iae0233f1080a2f12f20b46ba1a6b30aeb36843a8 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/260743 Reviewed-by: Riley Porter <rileyporter@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>