chore(reflection): tsfy tests

modules/angular2/test/reflection/reflector_common.dart

@@ -0,0 +1,19 @@
+class ClassDecorator {
+  final dynamic value;
+
+  const ClassDecorator(this.value);
+}
+
+class ParamDecorator {
+  final dynamic value;
+
+  const ParamDecorator(this.value);
+}
+
+ClassDecorator classDecorator(value) {
+  return new ClassDecorator(value);
+}
+
+ParamDecorator paramDecorator(value) {
+  return new ParamDecorator(value);
+}