Dart: Adds optional named arguments for creating bindings.

mojo/dart/test/validation_test.dart

Index: mojo/dart/test/validation_test.dart
diff --git a/mojo/dart/test/validation_test.dart b/mojo/dart/test/validation_test.dart
index 978a5bbe66d2d901d2e3c5005ae9463cd41316e6..6a07ab77e4afe4e14e311a5ed320267dab10eaf2 100644
--- a/mojo/dart/test/validation_test.dart
+++ b/mojo/dart/test/validation_test.dart
@@ -14,14 +14,13 @@ import 'package:mojo/dart/testing/validation_test_input_parser.dart' as parser;
 import 'package:mojo/public/interfaces/bindings/tests/validation_test_interfaces.mojom.dart';
 
 class ConformanceTestInterfaceImpl implements ConformanceTestInterface {
-  ConformanceTestInterfaceStub _stub;
+  ConformanceTestInterfaceBinding _binding;
   Completer _completer;
 
   ConformanceTestInterfaceImpl(this._completer,
                               MojoMessagePipeEndpoint endpoint) {
-    _stub = new ConformanceTestInterfaceStub.fromEndpoint(endpoint)
-            ..delegate = this
-            ..listen();
+    _binding = new ConformanceTestInterfaceBinding.fromEndpoint(
+        endpoint, delegate: this);
   }
 
   void _complete() => _completer.complete(null);
@@ -38,7 +37,7 @@ class ConformanceTestInterfaceImpl implements ConformanceTestInterface {
   method9(List<List<MojoHandle>> param0) => _complete();
   method10(Map<String, int> param0) => _complete();
 
-  void close({bool nodefer : false}) => _stub.close(nodefer: nodefer);
+  void close({bool nodefer : false}) => _binding.close(nodefer: nodefer);
 }
 
 parser.ValidationParseResult readAndParseTest(String test) {