Omnibus Observatory UI fixes:

runtime/observatory/lib/src/elements/class_instances.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.
 
 import 'dart:html';
 import 'dart:async';
 import 'package:observatory/models.dart' as M;
 import 'package:observatory/src/elements/class_ref.dart';
 import 'package:observatory/src/elements/helpers/rendering_scheduler.dart';
 import 'package:observatory/src/elements/helpers/tag.dart';
@@ skipping 16 matching lines @@
   RenderingScheduler<ClassInstancesElement> _r;
 
   Stream<RenderedEvent<ClassInstancesElement>> get onRendered => _r.onRendered;
 
   M.IsolateRef _isolate;
   M.Class _cls;
   M.RetainedSizeRepository _retainedSizes;
   M.ReachableSizeRepository _reachableSizes;
   M.StronglyReachableInstancesRepository _stronglyReachableInstances;
   M.TopRetainingInstancesRepository _topRetainingInstances;
-  M.InstanceRepository _instances;
+  M.ObjectRepository _objects;
   M.Guarded<M.Instance> _retainedSize = null;
   bool _loadingRetainedBytes = false;
   M.Guarded<M.Instance> _reachableSize = null;
   bool _loadingReachableBytes = false;
 
   M.IsolateRef get isolate => _isolate;
   M.Class get cls => _cls;
 
   factory ClassInstancesElement(
       M.IsolateRef isolate,
       M.Class cls,
       M.RetainedSizeRepository retainedSizes,
       M.ReachableSizeRepository reachableSizes,
       M.StronglyReachableInstancesRepository stronglyReachableInstances,
       M.TopRetainingInstancesRepository topRetainingInstances,
-      M.InstanceRepository instances,
+      M.ObjectRepository objects,
       {RenderingQueue queue}) {
     assert(isolate != null);
     assert(cls != null);
     assert(retainedSizes != null);
     assert(reachableSizes != null);
     assert(stronglyReachableInstances != null);
     assert(topRetainingInstances != null);
-    assert(instances != null);
+    assert(objects != null);
     ClassInstancesElement e = document.createElement(tag.name);
     e._r = new RenderingScheduler(e, queue: queue);
     e._isolate = isolate;
     e._cls = cls;
     e._retainedSizes = retainedSizes;
     e._reachableSizes = reachableSizes;
     e._stronglyReachableInstances = stronglyReachableInstances;
     e._topRetainingInstances = topRetainingInstances;
-    e._instances = instances;
+    e._objects = objects;
     return e;
   }
 
   ClassInstancesElement.created() : super.created();
 
   @override
   void attached() {
     super.attached();
     _r.enable();
   }
 
   @override
   void detached() {
     super.detached();
     _r.disable(notify: true);
     children = [];
   }
 
   StronglyReachableInstancesElement _strong;
   TopRetainingInstancesElement _topRetainig;
 
   void render() {
     _strong = _strong ??
         new StronglyReachableInstancesElement(
-            _isolate, _cls, _stronglyReachableInstances, _instances,
+            _isolate, _cls, _stronglyReachableInstances, _objects,
             queue: _r.queue);
     _topRetainig = _topRetainig ??
         new TopRetainingInstancesElement(
-            _isolate, _cls, _topRetainingInstances, _instances,
+            _isolate, _cls, _topRetainingInstances, _objects,
             queue: _r.queue);
     final instanceCount =
         _cls.newSpace.current.instances + _cls.oldSpace.current.instances;
     final size = Utils
         .formatSize(_cls.newSpace.current.bytes + _cls.oldSpace.current.bytes);
     children = [
       new DivElement()
         ..classes = ['memberList']
         ..children = [
           new DivElement()
@@ skipping 103 matching lines @@
     button.onClick.listen((_) async {
       button.disabled = true;
       _loadingRetainedBytes = true;
       _retainedSize = await _retainedSizes.get(_isolate, _cls.id);
       _r.dirty();
     });
     content.add(button);
     return content;
   }
 }