Handle metadata on nested function parameters.

tests/language/parameter_metadata_test.dart

Index: tests/language/parameter_metadata_test.dart
diff --git a/tests/language/parameter_metadata_test.dart b/tests/language/parameter_metadata_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..3f256900696d9920df3f13fbfc8ebd3be5687757
--- /dev/null
+++ b/tests/language/parameter_metadata_test.dart
@@ -0,0 +1,19 @@
+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// 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 that metadata annotations can be handled on nested parameters.
+
+test(
+     @deprecated    /// 01: ok
+     f(
+       @deprecated  /// 02: ok
+       a,
+       @deprecated  /// 03: ok
+       g(
+         @deprecated /// 04: ok
+         b))) {}
+
+main() {
+  test(null);
+}