Dart: Adds optional named arguments for creating bindings.

mojo/dart/test/bindings_generation_test.dart

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 import 'dart:async';
 import 'dart:isolate';
 import 'dart:typed_data';
 import 'mojo:bindings' as bindings;
 import 'mojo:core' as core;
 
 import 'package:mojo/dart/testing/expect.dart';
 import 'package:mojo/public/interfaces/bindings/tests/sample_interfaces.mojom.dart' as sample;
 import 'package:mojo/public/interfaces/bindings/tests/test_structs.mojom.dart' as structs;
 import 'package:mojo/public/interfaces/bindings/tests/rect.mojom.dart' as rect;
 
 class ProviderImpl implements sample.Provider {
   sample.ProviderStub _stub;
 
   ProviderImpl(core.MojoMessagePipeEndpoint endpoint) {
-    _stub = new sample.ProviderStub.fromEndpoint(endpoint)
-            ..delegate = this
-            ..listen();
+    _stub = new sample.ProviderStub.fromEndpoint(
+        endpoint, impl: this);
   }
 
   echoString(String a, Function responseFactory) =>
       new Future.value(responseFactory(a));
 
   echoStrings(String a, String b, Function responseFactory) =>
       new Future.value(responseFactory(a, b));
 
   echoMessagePipeHanlde(core.MojoHandle a, Function responseFactory) =>
       new Future.value(responseFactory(a));
@@ skipping 87 matching lines @@
   testSerializeNamedRegion();
   testSerializeArrayValueTypes();
 }
 
 
 main() async {
   testSerializeStructs();
   await testCallResponse();
   await testAwaitCallResponse();
 }