Expose Service Describer in Dart mojo package

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

Index: mojo/dart/packages/mojo_services/lib/notifications/notifications.mojom.dart
diff --git a/mojo/dart/packages/mojo_services/lib/notifications/notifications.mojom.dart b/mojo/dart/packages/mojo_services/lib/notifications/notifications.mojom.dart
index 409c510c803babf72d2d680a4209c8553b988d1c..fcfcaacbfa8514b0ff9befba7e7f33d9028a5283 100644
--- a/mojo/dart/packages/mojo_services/lib/notifications/notifications.mojom.dart
+++ b/mojo/dart/packages/mojo_services/lib/notifications/notifications.mojom.dart
@@ -504,11 +504,14 @@ const int _NotificationClient_onDismissedName = 1;
 
 
 class _NotificationClientServiceDescription implements service_describer.ServiceDescription {
-  dynamic getTopLevelInterface([Function responseFactory]) => null;
+  dynamic getTopLevelInterface([Function responseFactory]) =>
+      responseFactory(null);
 
-  dynamic getTypeDefinition(String typeKey, [Function responseFactory]) => null;
+  dynamic getTypeDefinition(String typeKey, [Function responseFactory]) =>
+      responseFactory(null);
 
-  dynamic getAllTypeDefinitions([Function responseFactory]) => null;
+  dynamic getAllTypeDefinitions([Function responseFactory]) =>
+      responseFactory(null);
 }
 
 abstract class NotificationClient {
@@ -692,7 +695,7 @@ class NotificationClientStub extends bindings.Stub {
 
   int get version => 0;
 
-  service_describer.ServiceDescription get serviceDescription =>
+  static service_describer.ServiceDescription get serviceDescription =>
     new _NotificationClientServiceDescription();
 }
 
@@ -702,11 +705,14 @@ const int _Notification_cancelName = 1;
 
 
 class _NotificationServiceDescription implements service_describer.ServiceDescription {
-  dynamic getTopLevelInterface([Function responseFactory]) => null;
+  dynamic getTopLevelInterface([Function responseFactory]) =>
+      responseFactory(null);
 
-  dynamic getTypeDefinition(String typeKey, [Function responseFactory]) => null;
+  dynamic getTypeDefinition(String typeKey, [Function responseFactory]) =>
+      responseFactory(null);
 
-  dynamic getAllTypeDefinitions([Function responseFactory]) => null;
+  dynamic getAllTypeDefinitions([Function responseFactory]) =>
+      responseFactory(null);
 }
 
 abstract class Notification {
@@ -891,7 +897,7 @@ class NotificationStub extends bindings.Stub {
 
   int get version => 0;
 
-  service_describer.ServiceDescription get serviceDescription =>
+  static service_describer.ServiceDescription get serviceDescription =>
     new _NotificationServiceDescription();
 }
 
@@ -900,11 +906,14 @@ const int _NotificationService_postName = 0;
 
 
 class _NotificationServiceServiceDescription implements service_describer.ServiceDescription {
-  dynamic getTopLevelInterface([Function responseFactory]) => null;
+  dynamic getTopLevelInterface([Function responseFactory]) =>
+      responseFactory(null);
 
-  dynamic getTypeDefinition(String typeKey, [Function responseFactory]) => null;
+  dynamic getTypeDefinition(String typeKey, [Function responseFactory]) =>
+      responseFactory(null);
 
-  dynamic getAllTypeDefinitions([Function responseFactory]) => null;
+  dynamic getAllTypeDefinitions([Function responseFactory]) =>
+      responseFactory(null);
 }
 
 abstract class NotificationService {
@@ -1077,7 +1086,7 @@ class NotificationServiceStub extends bindings.Stub {
 
   int get version => 0;
 
-  service_describer.ServiceDescription get serviceDescription =>
+  static service_describer.ServiceDescription get serviceDescription =>
     new _NotificationServiceServiceDescription();
 }