Dart: Refactors Proxies

mojo/dart/unittests/embedder_tests/dart_to_cpp_tests.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:typed_data';
 
 import 'package:_mojo_for_test_only/dart_to_cpp/dart_to_cpp.mojom.dart';
 import 'package:mojo/bindings.dart' as bindings;
 import 'package:mojo/core.dart' as core;
@@ skipping 25 matching lines @@
 
   EchoArgsList createEchoArgsList(List<EchoArgs> list) {
     return list.fold(null, (result, arg) {
       var element = new EchoArgsList();
       element.item = arg;
       element.next = result;
       return element;
     });
   }
 
-  void setClient(bindings.ProxyBase proxy) {
+  void setClient(bindings.Proxy proxy) {
     assert(cppSide == null);
     cppSide = proxy;
-    cppSide.ptr.startTest();
+    cppSide.startTest();
   }
 
   void ping() {
-    cppSide.ptr.pingResponse();
+    cppSide.pingResponse();
     _completer.complete(null);
     cppSide.close();
   }
 
   void echo(int numIterations, EchoArgs arg) {
     if (arg.si64 > 0) {
       arg.si64 = BAD_VALUE;
     }
     if (arg.si32 > 0) {
       arg.si32 = BAD_VALUE;
@@ skipping 21 matching lines @@
       specialArg.si8 = -1;
       specialArg.name = 'going';
       specialArg.dataHandle = dataPipe2.consumer;
       specialArg.messageHandle = messagePipe2.endpoints[0];
 
       dataPipe1.producer.write(_sampleData.buffer.asByteData());
       dataPipe2.producer.write(_sampleData.buffer.asByteData());
       messagePipe1.endpoints[1].write(_sampleMessage.buffer.asByteData());
       messagePipe2.endpoints[1].write(_sampleMessage.buffer.asByteData());
 
-      cppSide.ptr.echoResponse(createEchoArgsList([arg, specialArg]));
+      cppSide.echoResponse(createEchoArgsList([arg, specialArg]));
 
       dataPipe1.producer.handle.close();
       dataPipe2.producer.handle.close();
       messagePipe1.endpoints[1].handle.close();
       messagePipe2.endpoints[1].handle.close();
     }
-    cppSide.ptr.testFinished();
+    cppSide.testFinished();
     _completer.complete(null);
     cppSide.close();
   }
 
   Future<bool> get future => _completer.future;
 }
 
 main(List args, Object handleToken) {
   var rawHandle = new core.MojoHandle(handleToken);
   var endpoint = new core.MojoMessagePipeEndpoint(rawHandle);
   var dartSide = new DartSideImpl(endpoint);
   dartSide.future.then((_) {
     print('Success');
   });
 }