Simple fix to get noSuchMethod working on private members

frog/library.dart

 // Copyright (c) 2011, 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.
 
 class LibraryImport {
   String prefix;
   Library library;
   LibraryImport(this.library, [this.prefix = null]);
 }
 
@@ skipping 80 matching lines @@
       var mset = _privateMembers[member.name];
       if (mset == null) {
         // TODO(jimhug): Make this lazier!
         for (var lib in world.libraries.getValues()) {
           if (lib._privateMembers.containsKey(member.jsname)) {
             member._jsname = '_$jsname${member.jsname}';
             break;
           }
         }
 
-        mset = new MemberSet(member);
+        mset = new MemberSet(member, isVar:true);
         _privateMembers[member.name] = mset;
       } else {
         mset.members.add(member);
       }
     } else {
       world._addMember(member);
     }
   }
 
   // TODO(jimhug): Cache and share the types as interfaces!
@@ skipping 368 matching lines @@
 
   void visitFunctionDefinition(FunctionDefinition node) {
     currentType.addMethod(node.name.name, node);
   }
 
   void visitFunctionTypeDefinition(FunctionTypeDefinition node) {
     var type = library.addType(node.func.name.name, node, false);
     type.addMethod(':call', node.func);
   }
 }