DeclarationMirror extended with metadata.

tests/compiler/dart2js/mirrors_helper.dart

Index: tests/compiler/dart2js/mirrors_helper.dart
diff --git a/tests/compiler/dart2js/mirrors_helper.dart b/tests/compiler/dart2js/mirrors_helper.dart
index 0d2d7b8311aecde2b25db15c08210e8d4dc5e972..52d9bb9cf82669e56b43729e329de101e56cd00a 100644
--- a/tests/compiler/dart2js/mirrors_helper.dart
+++ b/tests/compiler/dart2js/mirrors_helper.dart
@@ -14,6 +14,16 @@ main() {
 
 }
 
+@Metadata // This is intentionally the type literal.
+@Metadata(null)
+@Metadata(true)
+@Metadata(false)
+@Metadata(0)
+@Metadata(1.5)
+@Metadata("Foo")
+@Metadata(const ["Foo"])
+@Metadata(const {'foo':"Foo"})
+@metadata
 class Foo {
 
 }
@@ -53,4 +63,11 @@ class _PrivateClass {
   void _privateMethod() {}
   _PrivateClass._privateConstructor();
   factory _PrivateClass._privateFactoryConstructor() => new _PrivateClass();
+}
+
+const metadata = const Metadata(null);
+
+class Metadata {
+  final data;
+  const Metadata(this.data);
 }