Clear analyzer warning on Observatory

runtime/observatory/lib/src/elements/class_view.dart

 // Copyright (c) 2013, 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.
 
 library class_view_element;
 
 import 'dart:async';
 import 'dart:html';
 import 'package:observatory/models.dart' as M;
 import 'package:observatory/src/elements/class_allocation_profile.dart';
@@ skipping 254 matching lines @@
                           ..onClick.listen((e) async {
                             e.target.disabled = true;
                             await _profiles.enable(_isolate, _cls);
                             _refresh();
                           })
                       ]
             ],
           new DivElement()
             ..children = _loadProfile
                 ? [
-                    new ClassAllocationProfileElement(_isolate, _cls, _profiles,
+                    new ClassAllocationProfileElement(
+                        _vm, _isolate, _cls, _profiles,
                         queue: _r.queue)
                   ]
                 : const [],
           new DivElement()
             ..children = _cls.location != null
                 ? [
                     new HRElement(),
                     new SourceInsetElement(
                         _isolate, _cls.location, _scripts, _objects, _events,
                         queue: _r.queue)
@@ skipping 215 matching lines @@
     await _loadAdditionalData();
     _r.dirty();
   }
 
   Future _loadAdditionalData() async {
     _classFields =
         await Future.wait(_cls.fields.map((f) => _fields.get(_isolate, f.id)));
     _r.dirty();
   }
 }