Converted Observatory field-view element

runtime/observatory/lib/src/repositories/class.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file
 
 part of repositories;
 
 class ClassRepository extends M.ClassRepository {
-  final S.Isolate isolate;
-
-  ClassRepository(this.isolate);
-
-  Future<M.Class> getObject() {
+  Future<M.Class> getObject(M.IsolateRef i) {
+    final isolate = i as S.Isolate;
+    assert(isolate != null);
     return isolate.getClassHierarchy();
   }
-  Future<M.Class> get(String id) async {
+  Future<M.Class> get(M.IsolateRef i, String id) async {
+    final isolate = i as S.Isolate;
+    assert(isolate != null);
     return (await isolate.getObject(id)) as S.Class;
   }
 }