Expose Service Describer in Dart mojo package

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

 // Copyright 2014 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.
 
 library activity_mojom;
 
 import 'dart:async';
 
 import 'package:mojo/bindings.dart' as bindings;
 import 'package:mojo/core.dart' as core;
@@ skipping 1701 matching lines @@
 const int _Activity_getUserFeedbackName = 0;
 const int _Activity_startActivityName = 1;
 const int _Activity_finishCurrentActivityName = 2;
 const int _Activity_setTaskDescriptionName = 3;
 const int _Activity_setSystemUiVisibilityName = 4;
 const int _Activity_setRequestedOrientationName = 5;
 
 
 
 class _ActivityServiceDescription 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 Activity {
   static const String serviceName = "activity::Activity";
   void getUserFeedback(Object userFeedback);
   void startActivity(Intent intent);
   void finishCurrentActivity();
   void setTaskDescription(TaskDescription description);
   void setSystemUiVisibility(SystemUiVisibility visibility);
   void setRequestedOrientation(ScreenOrientation orientation);
@@ skipping 224 matching lines @@
     _impl = d;
   }
 
   String toString() {
     var superString = super.toString();
     return "ActivityStub($superString)";
   }
 
   int get version => 0;
 
-  service_describer.ServiceDescription get serviceDescription =>
-    new _ActivityServiceDescription();
+  static service_describer.ServiceDescription _cachedServiceDescription;
+  static service_describer.ServiceDescription get serviceDescription {
+    if (_cachedServiceDescription == null) {
+      _cachedServiceDescription = new _ActivityServiceDescription();
+    }
+    return _cachedServiceDescription;
+  }
 }
 
 const int _PathService_getAppDataDirName = 0;
 const int _PathService_getFilesDirName = 1;
 const int _PathService_getCacheDirName = 2;
 
 
 
 class _PathServiceServiceDescription 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 PathService {
   static const String serviceName = "activity::PathService";
   dynamic getAppDataDir([Function responseFactory = null]);
   dynamic getFilesDir([Function responseFactory = null]);
   dynamic getCacheDir([Function responseFactory = null]);
 }
 
 
@@ skipping 303 matching lines @@
     _impl = d;
   }
 
   String toString() {
     var superString = super.toString();
     return "PathServiceStub($superString)";
   }
 
   int get version => 0;
 
-  service_describer.ServiceDescription get serviceDescription =>
-    new _PathServiceServiceDescription();
+  static service_describer.ServiceDescription _cachedServiceDescription;
+  static service_describer.ServiceDescription get serviceDescription {
+    if (_cachedServiceDescription == null) {
+      _cachedServiceDescription = new _PathServiceServiceDescription();
+    }
+    return _cachedServiceDescription;
+  }
 }
 
 const int _UserFeedback_performHapticFeedbackName = 0;
 const int _UserFeedback_performAuralFeedbackName = 1;
 
 
 
 class _UserFeedbackServiceDescription 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 UserFeedback {
   static const String serviceName = null;
   void performHapticFeedback(HapticFeedbackType type);
   void performAuralFeedback(AuralFeedbackType type);
 }
 
 
 class _UserFeedbackProxyImpl extends bindings.Proxy {
@@ skipping 165 matching lines @@
     _impl = d;
   }
 
   String toString() {
     var superString = super.toString();
     return "UserFeedbackStub($superString)";
   }
 
   int get version => 0;
 
-  service_describer.ServiceDescription get serviceDescription =>
-    new _UserFeedbackServiceDescription();
+  static service_describer.ServiceDescription _cachedServiceDescription;
+  static service_describer.ServiceDescription get serviceDescription {
+    if (_cachedServiceDescription == null) {
+      _cachedServiceDescription = new _UserFeedbackServiceDescription();
+    }
+    return _cachedServiceDescription;
+  }
 }