Include classes from patch libraries in x.js.info.html

sdk/lib/_internal/compiler/implementation/dump_info.dart

 // Copyright (c) 2013, 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 dump_info;
 
 import 'elements/elements.dart';
 import 'elements/visitor.dart';
 import 'dart:convert' show HtmlEscape;
 import 'dart2jslib.dart' show
@@ skipping 216 matching lines @@
         token: element.position());
     return null;
   }
 
   InfoNode visitLibraryElement(LibraryElement element) {
     List<InfoNode> contents = new List<InfoNode>();
     int size = compiler.dumpInfoTask.codeSizeCounter
         .getGeneratedSizeOf(element);
     if (size == 0) return null;
     stack.add(element);
-    element.forEachLocalMember((Element member) {
+    // For some reason the patch library contains the origin libraries members,
+    // but the origin library does not contain the patch members.
+    LibraryElement contentsLibrary = element.isPatched
+        ? element.patch
+        : element;
+    contentsLibrary.forEachLocalMember((Element member) {
       InfoNode info = member.accept(this);
       if (info != null) {
         contents.add(info);
       }
     });
     stack.removeLast();
     String nameString = element.getLibraryName() == ""
         ? "<unnamed>"
         : element.getLibraryName();
     contents.sort((InfoNode e1, InfoNode e2) {
@@ skipping 255 matching lines @@
         var container = containers[i];
         container.addEventListener('click',
           toggler(container.nextElementSibling), false);
        container.nextElementSibling.hidden = true;
       };
     </script>
   </body>
 </html>""");
   }
 }