Converted Observatory megamorphiccache-view element

runtime/observatory/tests/observatory_ui/mocks/objects/megamorphiccache.dart

Index: runtime/observatory/tests/observatory_ui/mocks/objects/megamorphiccache.dart
diff --git a/runtime/observatory/tests/observatory_ui/mocks/objects/megamorphiccache.dart b/runtime/observatory/tests/observatory_ui/mocks/objects/megamorphiccache.dart
index 6e589414903348dba67141dc3a497bff844b39ea..07da7f1c5a748cdbf91b7684d145ee14f1a0aa53 100644
--- a/runtime/observatory/tests/observatory_ui/mocks/objects/megamorphiccache.dart
+++ b/runtime/observatory/tests/observatory_ui/mocks/objects/megamorphiccache.dart
@@ -9,5 +9,20 @@ class MegamorphicCacheRefMock implements M.MegamorphicCacheRef {
   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()});
 }