Make TypedefMirror a direct descendant of TypeMirror.

runtime/lib/mirrors_patch.dart

 // Copyright (c) 2012, 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.
 
 import "dart:nativewrappers";
 // TODO(ahe): Move _symbol_dev.Symbol to its own "private" library?
 import "dart:_collection-dev" as _symbol_dev;
 
 /**
  * Returns a [MirrorSystem] for the current isolate.
@@ skipping 23 matching lines @@
 /**
  * Returns a [ClassMirror] for the class represented by a Dart
  * Type object.
  *
  * This only works with objects local to the current isolate.
  */
 patch ClassMirror reflectClass(Type key) {
   return _Mirrors.reflectClass(key);
 }
 
+patch TypeMirror reflectType(Type key) {
+  return _Mirrors.reflectType(key);
+}
+
 patch class MirrorSystem {
   /* patch */ static String getName(Symbol symbol) {
     return _symbol_dev.Symbol.getName(symbol);
   }
 }