Revert API change from issue 1053883002.

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 "package:mojo/public/dart/application.dart";
 import "dart:sky.internals" as internals;
 import "package:mojo/public/dart/bindings.dart" as bindings;
 import "package:mojo/public/dart/core.dart" as core;
 import "package:mojo/public/interfaces/application/service_provider.mojom.dart";
 import "package:mojo/public/interfaces/application/shell.mojom.dart";
@@ skipping 32 matching lines @@
 
   void connectToService(String url, bindings.ProxyBase proxy) {
     var appSp = new ServiceProviderProxy.unbound();
     shell.ptr.connectToApplication(url, appSp, null);
     var pipe = new core.MojoMessagePipe();
     proxy.impl.bind(pipe.endpoints[0]);
     appSp.ptr.connectToService(proxy.name, pipe.endpoints[1]);
     appSp.close();
   }
 
-  ServiceRegistry get serviceRegistry {
+  ServiceRegistryProxy get serviceRegistry {
     if (_serviceRegistry == null) {
       _serviceRegistry = new ServiceRegistryProxy.fromHandle(
           new core.MojoHandle(internals.takeServiceRegistry()));
     }
-    return _serviceRegistry.ptr;
+    return _serviceRegistry;
   }
 }