Omnibus Observatory UI fixes:

runtime/observatory/lib/src/elements/object_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.
 
 import 'dart:async';
 import 'dart:html';
 import 'package:observatory/models.dart' as M;
 import 'package:observatory/src/elements/context_ref.dart';
 import 'package:observatory/src/elements/curly_block.dart';
 import 'package:observatory/src/elements/helpers/nav_bar.dart';
@@ skipping 29 matching lines @@
   M.VM _vm;
   M.IsolateRef _isolate;
   M.EventRepository _events;
   M.NotificationRepository _notifications;
   M.Object _object;
   M.ObjectRepository _objects;
   M.RetainedSizeRepository _retainedSizes;
   M.ReachableSizeRepository _reachableSizes;
   M.InboundReferencesRepository _references;
   M.RetainingPathRepository _retainingPaths;
-  M.InstanceRepository _instances;
 
   M.VMRef get vm => _vm;
   M.IsolateRef get isolate => _isolate;
   M.NotificationRepository get notifications => _notifications;
   M.Context get object => _object;
 
   factory ObjectViewElement(
       M.VM vm,
       M.IsolateRef isolate,
       M.Object object,
       M.EventRepository events,
       M.NotificationRepository notifications,
       M.ObjectRepository objects,
       M.RetainedSizeRepository retainedSizes,
       M.ReachableSizeRepository reachableSizes,
       M.InboundReferencesRepository references,
       M.RetainingPathRepository retainingPaths,
-      M.InstanceRepository instances,
       {RenderingQueue queue}) {
     assert(vm != null);
     assert(isolate != null);
     assert(events != null);
     assert(notifications != null);
     assert(object != null);
     assert(objects != null);
     assert(retainedSizes != null);
     assert(reachableSizes != null);
     assert(references != null);
     assert(retainingPaths != null);
-    assert(instances != null);
     ObjectViewElement e = document.createElement(tag.name);
     e._r = new RenderingScheduler(e, queue: queue);
     e._vm = vm;
     e._isolate = isolate;
     e._events = events;
     e._notifications = notifications;
     e._object = object;
     e._objects = objects;
     e._retainedSizes = retainedSizes;
     e._reachableSizes = reachableSizes;
     e._references = references;
     e._retainingPaths = retainingPaths;
-    e._instances = instances;
     return e;
   }
 
   ObjectViewElement.created() : super.created();
 
   @override
   attached() {
     super.attached();
     _r.enable();
   }
@@ skipping 19 matching lines @@
             _r.dirty();
           }),
         new NavNotifyElement(_notifications, queue: _r.queue)
       ]),
       new DivElement()
         ..classes = ['content-centered-big']
         ..children = [
           new HeadingElement.h2()..text = 'Object',
           new HRElement(),
           new ObjectCommonElement(_isolate, _object, _retainedSizes,
-              _reachableSizes, _references, _retainingPaths, _instances,
+              _reachableSizes, _references, _retainingPaths, _objects,
               queue: _r.queue),
           new HRElement(),
           new ViewFooterElement(queue: _r.queue)
         ]
     ];
   }
 }