Some fixes to work better with the services framework

pkg/serialization/lib/src/basic_rule.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.
 
 part of serialization;
 
 // TODO(alanknight): Figure out how to reasonably separate out the things
 // that require reflection without making the API more awkward. Or if that is
 // in fact necessary. Maybe the tree-shaking will just remove it if unused.
 
@@ skipping 143 matching lines @@
        var newKey = (each is Reference) ? each.inflated() : each;
        newState[newKey] = state[each];
      }
      return new _MapWrapper.fromMap(newState, fields.contents);
    }
 
   /**
    * Extract the state from [object] using an instanceMirror and the field
    * names in [fields]. Call the function [callback] on each value.
    */
-  extractState(object, Function callback) {
+  extractState(object, Function callback, Writer w) {
     var result = createStateHolder();
     var mirror = reflect(object);
 
     keysAndValues(fields).forEach(
         (index, field) {
           var value = _value(mirror, field);
           callback(field.name);
           callback(checkForEssentialLists(index, value));
           result[index] = value;
         });
@@ skipping 448 matching lines @@
   _MapWrapper(this.fieldList) : _map = new Map();
   _MapWrapper.fromMap(this._map, this.fieldList);
 
   operator [](key) => _map[fieldList[key].name];
 
   operator []=(key, value) { _map[fieldList[key].name] = value; }
   get length => _map.length;
 
   asMap() => _map;
 }