Converted Observatory object-common element

runtime/observatory/tests/observatory_ui/mocks/objects/instance.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 mocks;
 
 class InstanceRefMock implements M.InstanceRef {
   final String id;
   final String name;
   final M.InstanceKind kind;
@@ skipping 31 matching lines @@
   final int count;
   final Iterable<dynamic> typedElements;
   final Iterable<M.BoundField> fields;
   final Iterable<M.Guarded<M.ObjectRef>> elements;
   final Iterable<M.MapAssociation> associations;
   final M.InstanceRef key;
   final M.InstanceRef value;
   final M.InstanceRef referent;
 
   const InstanceMock({this.id: 'instance-id', this.name: 'instance-name',
-                      this.kind: M.InstanceKind.vNull, this.clazz, this.size,
+                      this.kind: M.InstanceKind.vNull,
+                      this.clazz: const ClassRefMock(), this.size: 0,
                       this.valueAsString: 'null', this.valueAsStringIsTruncated,
                       this.length, this.typeClass, this.parameterizedClass,
                       this.pattern, this.closureFunction, this.offset,
                       this.count, this.typedElements, this.fields,
                       this.elements, this.associations, this.key, this.value,
                       this.referent});
 }