Revert "Revert "Resolve metadata on library tags""

tests/lib/mirrors/library_metatarget_test.dart

Index: tests/lib/mirrors/library_metatarget_test.dart
diff --git a/tests/lib/mirrors/abstract_test.dart b/tests/lib/mirrors/library_metatarget_test.dart
similarity index 50%
copy from tests/lib/mirrors/abstract_test.dart
copy to tests/lib/mirrors/library_metatarget_test.dart
index 39923639e08b8a559e2de07d8e825a78c6a994eb..8bbb64ff03c4dd320b444f92512963e983a243ff 100644
--- a/tests/lib/mirrors/abstract_test.dart
+++ b/tests/lib/mirrors/library_metatarget_test.dart
@@ -2,18 +2,16 @@
 // 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.
 
-// Test abstract classes are retained.
+// Regression test for the combined use of metatargets and library tags.
 
-library test.abstract_test;
+library topLib;
 
-import 'dart:mirrors';
-
-import 'stringify.dart';
+import 'library_metatarget_test_lib.dart';
+import 'library_metatarget_test_annotations_lib.dart';
 
-abstract class Foo {
-}
+@MirrorsUsed(metaTargets:const [Reflectable])
+import 'dart:mirrors';
 
 void main() {
-  expect('Class(s(Foo) in s(test.abstract_test), top-level)',
-         reflectClass(Foo));
+  print(new A());
 }