Rename specialTreatmentFor, improve handling of constants as constructor parameters.

pkg/serialization/test/test_models.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.
 
 /** Provides some basic model classes to test serialization. */
 
 part of serialization_test;
 
 class Person {
   String name, rank, serialNumber;
   var address;
 }
 
 class Address {
   String street, city, state, zip;
+  Address();
+  Address.with(this.street, this.city, this.state, this.zip);
 }
 
 class Various {
   Various.Foo(this._d, this.e);
 
   // Field
   var a;
 
   // Get/Set pair
   var _b;
@@ skipping 38 matching lines @@
 class Stream {
   // In a real stream the position wouldn't likely be settable, making
   // this trickier to reconstruct.
   List _collection;
   int position = 0;
   Stream(this._collection);
 
   next() => atEnd() ? null : _collection[position++];
   atEnd() => position >= _collection.length;
 }