changes for 0.3.9

test/message_generator_test.dart

 #!/usr/bin/env 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 message_generator_test;
 
 import 'package:protoc_plugin/src/descriptor.pb.dart';
 import 'package:protoc_plugin/src/plugin.pb.dart';
 import 'package:protoc_plugin/protoc.dart';
@@ skipping 94 matching lines @@
                 ..defaultValue = r'$'
             ])
         ..enumType.add(ed);
     MemoryWriter buffer = new MemoryWriter();
     IndentingWriter writer = new IndentingWriter('  ', buffer);
     var options = parseGenerationOptions(
         new CodeGeneratorRequest(), new CodeGeneratorResponse());
     var context = new GenerationContext(options,
         new DefaultOutputConfiguration());
     FileGenerator fg = new FileGenerator(fd, null, context);
-    MessageGenerator mg = new MessageGenerator(md, fg, context, false);
+    MessageGenerator mg = new MessageGenerator(md, fg, context, null);
     mg.initializeFields();
     mg.generate(writer);
     expect(buffer.toString(), expected);
   });
 }