Dart: Futures -> Callbacks.

mojo/dart/packages/mojo_services/lib/mojo/tcp_connected_socket.mojom.dart

Index: mojo/dart/packages/mojo_services/lib/mojo/tcp_connected_socket.mojom.dart
diff --git a/mojo/dart/packages/mojo_services/lib/mojo/tcp_connected_socket.mojom.dart b/mojo/dart/packages/mojo_services/lib/mojo/tcp_connected_socket.mojom.dart
index 4ceb00377de26129db3970046b9e6047c68c3ca9..17b35e43f641548d69f1fa9fd28de1948f3594a0 100644
--- a/mojo/dart/packages/mojo_services/lib/mojo/tcp_connected_socket.mojom.dart
+++ b/mojo/dart/packages/mojo_services/lib/mojo/tcp_connected_socket.mojom.dart
@@ -11,14 +11,17 @@ import 'package:mojo/mojo/bindings/types/service_describer.mojom.dart' as servic
 
 
 class _TcpConnectedSocketServiceDescription implements service_describer.ServiceDescription {
-  dynamic getTopLevelInterface([Function responseFactory]) =>
-      responseFactory(null);
+  void getTopLevelInterface(Function responder) {
+    responder(null);
+  }
 
-  dynamic getTypeDefinition(String typeKey, [Function responseFactory]) =>
-      responseFactory(null);
+  void getTypeDefinition(String typeKey, Function responder) {
+    responder(null);
+  }
 
-  dynamic getAllTypeDefinitions([Function responseFactory]) =>
-      responseFactory(null);
+  void getAllTypeDefinitions(Function responder) {
+    responder(null);
+  }
 }
 
 abstract class TcpConnectedSocket {
@@ -153,11 +156,11 @@ class _TcpConnectedSocketStubControl
 
 
 
-  dynamic handleMessage(bindings.ServiceMessage message) {
+  void handleMessage(bindings.ServiceMessage message) {
     if (bindings.ControlMessageHandler.isControlMessage(message)) {
-      return bindings.ControlMessageHandler.handleMessage(this,
-                                                          0,
-                                                          message);
+      bindings.ControlMessageHandler.handleMessage(
+          this, 0, message);
+      return;
     }
     if (_impl == null) {
       throw new core.MojoApiError("$this has no implementation set");
@@ -167,7 +170,6 @@ class _TcpConnectedSocketStubControl
         throw new bindings.MojoCodecError("Unexpected message name");
         break;
     }
-    return null;
   }
 
   TcpConnectedSocket get impl => _impl;