Migrated test block 220 to Dart 2.0.

tests/lib/lib.status

Index: tests/lib/lib.status
diff --git a/tests/lib/lib.status b/tests/lib/lib.status
index c2022f20e9d8914df22f5cef7d9deca2eb1673b2..1ad019c2eaaf0c7449fba23f46c814818669440c 100644
--- a/tests/lib/lib.status
+++ b/tests/lib/lib.status
@@ -33,9 +33,6 @@ mirrors/fake_function_without_call_test: RuntimeError # Issue 11612
 mirrors/generic_f_bounded_mixin_application_test: RuntimeError # Issue 12087
 mirrors/generic_function_typedef_test: RuntimeError # Issue 12333
 mirrors/generic_interface_test: RuntimeError # Issue 12087
-mirrors/generic_local_function_test: RuntimeError # Issue 12333
-mirrors/generic_mixin_test: RuntimeError # Issue 12333
-mirrors/generic_mixin_applications_test: RuntimeError # Issue 12333
 mirrors/get_field_static_test/00: RuntimeError # Issue 21323
 mirrors/hierarchy_invariants_test: RuntimeError # Issue 15262
 mirrors/hot_get_field_test: CompileTimeError # Issue 12164
@@ -466,8 +463,6 @@ mirrors/generic_f_bounded_mixin_application_test: RuntimeError
 mirrors/generic_function_typedef_test: RuntimeError
 mirrors/generic_interface_test/01: RuntimeError
 mirrors/generic_interface_test/none: RuntimeError
-mirrors/generic_mixin_applications_test: RuntimeError
-mirrors/generic_mixin_test: RuntimeError
 mirrors/hot_get_field_test: RuntimeError
 mirrors/hot_set_field_test: RuntimeError
 mirrors/intercepted_object_test: RuntimeError