Converted Observatory megamorphiccache-view element

runtime/observatory/tests/observatory_ui/mocks/objects/megamorphiccache.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 MegamorphicCacheRefMock implements M.MegamorphicCacheRef {
   final String id;
   final String selector;
 
   const MegamorphicCacheRefMock({this.id : 'megamorphiccache-id',
-                                 this.selector});
+                                 this.selector: 'selector'});
 }
+
+class MegamorphicCacheMock implements M.MegamorphicCache {
+  final String id;
+  final M.ClassRef clazz;
+  final int size;
+  final String selector;
+  final int mask;
+  final M.InstanceRef buckets;
+  final M.InstanceRef argumentsDescriptor;
+
+  const MegamorphicCacheMock({this.id : 'megamorphiccache-id',
+      this.clazz: const ClassRefMock(), this.size: 1, this.selector: 'selector',
+      this.mask: 0, this.buckets: const InstanceRefMock(),
+      this.argumentsDescriptor: const InstanceRefMock()});
+}