Converted Observatory cpu-profile element

runtime/observatory/tests/observatory_ui/class_ref/element_test.dart

Index: runtime/observatory/tests/observatory_ui/class_ref/element_test.dart
diff --git a/runtime/observatory/tests/observatory_ui/class_ref/element_test.dart b/runtime/observatory/tests/observatory_ui/class_ref/element_test.dart
index 0f0eed2271e3beba05709d79cc95aa5e6a79df4c..2748c40380d2dc197b378fcec7ae1dce703510dc 100644
--- a/runtime/observatory/tests/observatory_ui/class_ref/element_test.dart
+++ b/runtime/observatory/tests/observatory_ui/class_ref/element_test.dart
@@ -9,16 +9,16 @@ import '../mocks.dart';
 main(){
   ClassRefElement.tag.ensureRegistration();
 
-  final IsolateRefMock isolate = new IsolateRefMock(id: 'i-id', name: 'i-name');
-  final ClassRefMock cls = new ClassRefMock(id: 'c-id', name: 'c-name');
+  const isolate = const IsolateRefMock();
+  const cls = const ClassRefMock();
   test('instantiation', () {
-    final ClassRefElement e = new ClassRefElement(isolate, cls);
+    final e = new ClassRefElement(isolate, cls);
     expect(e, isNotNull, reason: 'element correctly created');
     expect(e.isolate, equals(isolate));
     expect(e.cls, equals(cls));
   });
   test('elements created after attachment', () async {
-    final ClassRefElement e = new ClassRefElement(isolate, cls);
+    final e = new ClassRefElement(isolate, cls);
     document.body.append(e);
     await e.onRendered.first;
     expect(e.children.length, isNonZero, reason: 'has elements');