Omnibus Observatory UI fixes:

runtime/observatory/lib/src/elements/top_retaining_instances.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.
 
 import 'dart:html';
 import 'dart:async';
 import 'package:observatory/models.dart' as M;
 import 'package:observatory/src/elements/curly_block.dart';
 import 'package:observatory/src/elements/instance_ref.dart';
 import 'package:observatory/src/elements/helpers/any_ref.dart';
 import 'package:observatory/src/elements/helpers/rendering_scheduler.dart';
 import 'package:observatory/src/elements/helpers/tag.dart';
 import 'package:observatory/utils.dart';
 
 class TopRetainingInstancesElement extends HtmlElement implements Renderable {
   static const tag = const Tag<TopRetainingInstancesElement>(
       'top-retainig-instances',
       dependencies: const [CurlyBlockElement.tag, InstanceRefElement.tag]);
 
   RenderingScheduler<TopRetainingInstancesElement> _r;
 
   Stream<RenderedEvent<TopRetainingInstancesElement>> get onRendered =>
       _r.onRendered;
 
   M.IsolateRef _isolate;
   M.ClassRef _cls;
   M.TopRetainingInstancesRepository _topRetainingInstances;
-  M.InstanceRepository _instances;
+  M.ObjectRepository _objects;
   Iterable<M.RetainingObject> _topRetaining;
   bool _expanded = false;
 
   M.IsolateRef get isolate => _isolate;
   M.ClassRef get cls => _cls;
 
   factory TopRetainingInstancesElement(
       M.IsolateRef isolate,
       M.ClassRef cls,
       M.TopRetainingInstancesRepository topRetainingInstances,
-      M.InstanceRepository instances,
+      M.ObjectRepository objects,
       {RenderingQueue queue}) {
     assert(isolate != null);
     assert(cls != null);
     assert(topRetainingInstances != null);
-    assert(instances != null);
+    assert(objects != null);
     TopRetainingInstancesElement e = document.createElement(tag.name);
     e._r = new RenderingScheduler(e, queue: queue);
     e._isolate = isolate;
     e._cls = cls;
     e._topRetainingInstances = topRetainingInstances;
-    e._instances = instances;
+    e._objects = objects;
     return e;
   }
 
   TopRetainingInstancesElement.created() : super.created();
 
   @override
   void attached() {
     super.attached();
     _r.enable();
   }
@@ skipping 37 matching lines @@
     return _topRetaining
         .map((r) => new DivElement()
           ..classes = ['memberItem']
           ..children = [
             new DivElement()
               ..classes = ['memberName']
               ..text = '${Utils.formatSize(r.retainedSize)} ',
             new DivElement()
               ..classes = ['memberValue']
               ..children = [
-                anyRef(_isolate, r.object, _instances, queue: _r.queue)
+                anyRef(_isolate, r.object, _objects, queue: _r.queue)
               ]
           ])
         .toList();
   }
 }