Add mirrors tests

test/codegen/lib/mirrors/dart2js_mirrors_test.dart

Index: test/codegen/lib/mirrors/dart2js_mirrors_test.dart
diff --git a/test/codegen/language/crash_6725_test.dart b/test/codegen/lib/mirrors/dart2js_mirrors_test.dart
similarity index 56%
copy from test/codegen/language/crash_6725_test.dart
copy to test/codegen/lib/mirrors/dart2js_mirrors_test.dart
index 420111f5af67ca8a92d7115c454b03eff6f01d08..4ebe77c5214b17906c985dae41d945fa871385a6 100644
--- a/test/codegen/language/crash_6725_test.dart
+++ b/test/codegen/lib/mirrors/dart2js_mirrors_test.dart
@@ -2,12 +2,13 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-// Regression test for a crash in dart2js.
+// This test should be removed when dart2js can pass all mirror tests.
+// TODO(ahe): Remove this test.
 
-library crash_6725;
 
-part 'crash_6725_part.dart'; /// 01: static type warning
+import 'mirrors_test.dart' as test;
 
 main() {
-  test(); /// 01: continued
+  test.isDart2js = true;
+  test.main();
 }