Dart: Removes name conflicts from generated bindings.

sky/framework/embedder.dart

 // Copyright 2015 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 "/mojo/public/dart/application.dart";
 import "dart:sky.internals" as internals;
 import "mojo:bindings" as bindings;
 import "mojo:core" as core;
 import "package:mojo/public/interfaces/application/service_provider.mojom.dart";
 import "package:mojo/public/interfaces/application/shell.mojom.dart";
@@ skipping 18 matching lines @@
          proxyHandle.isValid ? ServiceProviderProxy.fromHandle(proxyHandle)
              : null;
       );
     }
     return _connection;
   }
 
   ApplicationConnection connectToApplication(String url) {
     var proxy = new ServiceProviderProxy.unbound();
     var stub = new ServiceProviderStub.unbound();
-    shell.connectToApplication(url, proxy, stub);
+    shell.ptr.connectToApplication(url, proxy, stub);
     return new ApplicationConnection(stub, proxy);
   }
 
-  void connectToService(String url, bindings.Proxy proxy) {
+  void connectToService(String url, bindings.ProxyBase proxy) {
     var appSp = new ServiceProviderProxy.unbound();
-    shell.connectToApplication(url, appSp, null);
+    shell.ptr.connectToApplication(url, appSp, null);
     var pipe = new core.MojoMessagePipe();
-    proxy.bind(pipe.endpoints[0]);
-    appSp.connectToService(proxy.name, pipe.endpoints[1]);
+    proxy.impl.bind(pipe.endpoints[0]);
+    appSp.ptr.connectToService(proxy.name, pipe.endpoints[1]);
     appSp.close();
   }
 }