Dart: Removes name conflicts from generated bindings.

sky/tests/services/iframe-embed-vmc.sky

 <sky>
 
 <iframe></iframe>
 
 <script>
 import 'dart:async';
 import 'dart:sky';
 import 'dart:sky.internals' as internals;
 import 'dart:typed_data';
 import '/mojo/public/dart/application.dart';
@@ skipping 12 matching lines @@
   void initialize(List<String> args, String url) {
     // The vmcApp provides ViewManagerClient and EchoService.
     const vmcURL =
         "http://127.0.0.1:8000/sky/tests/services/resources/iframe-vmc.js";
     final vmcAppConnection = connectToApplication(vmcURL);
 
     // The Promise returned by the vmcApp's echoString() method will not
     // resolve until the vmcApp's onEmbed() method runs.
     final echoService = new echo_service_mojom.EchoServiceProxy.unbound();
     vmcAppConnection.requestService(echoService);
-    echoService.echoString("success").then((response) {
+    echoService.ptr.echoString("success").then((response) {
       internals.notifyTestComplete(response.value);
     });
 
     var applicationPipe = new MojoMessagePipe();
     var proxyEndpoint = applicationPipe.endpoints[0];
     var applicationEndpoint = applicationPipe.endpoints[1];
-    vmcAppConnection.remoteServiceProvider.connectToService(
-        view_manager.ViewManagerClient.name, applicationEndpoint);
+    vmcAppConnection.remoteServiceProvider.ptr.connectToService(
+        view_manager.ViewManagerClientName, applicationEndpoint);
     document.querySelector("iframe").
         embedViewManagerClient(proxyEndpoint.handle.h);
   }
 }
 
 main() {
   var messagePipe = new MojoMessagePipe();
   var app = new IFrameEmbed(messagePipe.endpoints[1]);
-  app.listen();
   var shellProxy = new shell_mojom.ShellProxy.fromHandle(
       new MojoHandle(internals.takeShellProxyHandle()));
   app.initializeFromShellProxy(shellProxy, [], "");
 }
 </script>
 </sky>