pkg/docgen: fixed type references within typedef doc comments

pkg/docgen/lib/src/models/dummy_mirror.dart

 // 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.
 
 library docgen.models.dummy_mirror;
 
 import '../exports/mirrors_util.dart' as dart2js_util;
 import '../exports/source_mirrors.dart';
 
 import '../library_helpers.dart';
 
 import 'indexable.dart';
 import 'model_helpers.dart';
 
 /// For types that we do not explicitly create or have not yet created in our
 /// entity map (like core types).
 class DummyMirror implements Indexable {
   final DeclarationMirror mirror;
   /// The library that contains this element, if any. Used as a hint to help
   /// determine which object we're referring to when looking up this mirror in
   /// our map.
   final Indexable owner;
+
   DummyMirror(this.mirror, [this.owner]);
 
   String get docName {
     if (mirror == null) return '';
     if (mirror is LibraryMirror) {
       return dart2js_util.qualifiedNameOf(mirror).replaceAll('.', '-');
     }
     var mirrorOwner = mirror.owner;
     if (mirrorOwner == null) return dart2js_util.qualifiedNameOf(mirror);
     var simpleName = dart2js_util.nameOf(mirror);
@@ skipping 22 matching lines @@
   LibraryMirror _getOwningLibraryFromMirror(DeclarationMirror mirror) {
     if (mirror is LibraryMirror) return mirror;
     if (mirror == null) return null;
     return _getOwningLibraryFromMirror(mirror.owner);
   }
 
   noSuchMethod(Invocation invocation) {
     throw new UnimplementedError(invocation.memberName.toString());
   }
 }