Handle metadata on nested function parameters.

tests/language/metadata_scope1_test.dart

Index: tests/language/metadata_scope1_test.dart
diff --git a/pkg/docgen/test/multi_library_code/lib/test_lib2_foo.dart b/tests/language/metadata_scope1_test.dart
similarity index 58%
copy from pkg/docgen/test/multi_library_code/lib/test_lib2_foo.dart
copy to tests/language/metadata_scope1_test.dart
index 1b3d037c5bce3add4829e93b527bc5eb7f01f821..e7820778a57892b3bf75f346bf036ea1108cbcb8 100644
--- a/pkg/docgen/test/multi_library_code/lib/test_lib2_foo.dart
+++ b/tests/language/metadata_scope1_test.dart
@@ -2,14 +2,14 @@
 // 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.
 
-library test_lib2_foo;
+// Test that a type variable is not in scope for metadata declared on the type
+// declaration.
 
-export 'test_lib2_bar.dart';
-
-class Foo {
-
-}
+@deprecated
+typedef Foo
+<deprecated>  /// 01: ok
+();
 
 main() {
-  print('hello world');
+  Foo f = null;
 }