Omnibus Observatory UI fixes:

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

Index: runtime/observatory/lib/src/elements/instance_ref.dart
diff --git a/runtime/observatory/lib/src/elements/instance_ref.dart b/runtime/observatory/lib/src/elements/instance_ref.dart
index 1e1df2dd1c85dd047f6af0938dc3be5a262ffd1e..7bbf3aebbb0c0d6094fd499f2398ce43fcef7b9b 100644
--- a/runtime/observatory/lib/src/elements/instance_ref.dart
+++ b/runtime/observatory/lib/src/elements/instance_ref.dart
@@ -14,7 +14,8 @@ import 'package:observatory/src/elements/helpers/uris.dart';
 import 'package:observatory/utils.dart';
 
 class InstanceRefElement extends HtmlElement implements Renderable {
-  static const tag = const Tag<InstanceRefElement>('instance-ref');
+  static const tag = const Tag<InstanceRefElement>('instance-ref',
+      dependencies: const [CurlyBlockElement.tag]);
 
   RenderingScheduler<InstanceRefElement> _r;
 
@@ -22,24 +23,24 @@ class InstanceRefElement extends HtmlElement implements Renderable {
 
   M.IsolateRef _isolate;
   M.InstanceRef _instance;
-  M.InstanceRepository _instances;
+  M.ObjectRepository _objects;
   M.Instance _loadedInstance;
   bool _expanded = false;
 
   M.IsolateRef get isolate => _isolate;
   M.InstanceRef get instance => _instance;
 
-  factory InstanceRefElement(M.IsolateRef isolate, M.InstanceRef instance,
-      M.InstanceRepository instances,
+  factory InstanceRefElement(
+      M.IsolateRef isolate, M.InstanceRef instance, M.ObjectRepository objects,
       {RenderingQueue queue}) {
     assert(isolate != null);
     assert(instance != null);
-    assert(instances != null);
+    assert(objects != null);
     InstanceRefElement e = document.createElement(tag.name);
     e._r = new RenderingScheduler(e, queue: queue);
     e._isolate = isolate;
     e._instance = instance;
-    e._instances = instances;
+    e._objects = objects;
     return e;
   }
 
@@ -85,7 +86,7 @@ class InstanceRefElement extends HtmlElement implements Renderable {
   }
 
   Future _refresh() async {
-    _loadedInstance = await _instances.get(_isolate, _instance.id);
+    _loadedInstance = await _objects.get(_isolate, _instance.id);
     _r.dirty();
   }
 
@@ -98,7 +99,7 @@ class InstanceRefElement extends HtmlElement implements Renderable {
     button.onClick.listen((_) async {
       button.disabled = true;
       _loadedInstance =
-          await _instances.get(_isolate, _instance.id, count: count * 2);
+          await _objects.get(_isolate, _instance.id, count: count * 2);
       _r.dirty();
     });
     return [button];
@@ -209,6 +210,7 @@ class InstanceRefElement extends HtmlElement implements Renderable {
 
   bool _hasValue() {
     switch (_instance.kind) {
+      case M.InstanceKind.closure:
       case M.InstanceKind.plainInstance:
       case M.InstanceKind.mirrorReference:
       case M.InstanceKind.stackTrace:
@@ -241,14 +243,29 @@ class InstanceRefElement extends HtmlElement implements Renderable {
       return [new SpanElement()..text = 'Loading...'];
     }
     switch (_instance.kind) {
+      case M.InstanceKind.closure:
+        return [
+          new DivElement()
+            ..children = [
+              new SpanElement()..text = 'function = ',
+              anyRef(_isolate, _loadedInstance.closureFunction, _objects,
+                  queue: _r.queue)
+            ],
+          new DivElement()
+            ..children = [
+              new SpanElement()..text = 'context = ',
+              anyRef(_isolate, _loadedInstance.closureContext, _objects,
+                  queue: _r.queue)
+            ],
+        ];
       case M.InstanceKind.plainInstance:
         return _loadedInstance.fields
             .map((f) => new DivElement()
               ..children = [
-                new FieldRefElement(_isolate, f.decl, _instances,
+                new FieldRefElement(_isolate, f.decl, _objects,
                     queue: _r.queue),
                 new SpanElement()..text = ' = ',
-                anyRef(_isolate, f.value, _instances, queue: _r.queue)
+                anyRef(_isolate, f.value, _objects, queue: _r.queue)
               ])
             .toList();
       case M.InstanceKind.list:
@@ -257,7 +274,7 @@ class InstanceRefElement extends HtmlElement implements Renderable {
             .map((element) => new DivElement()
               ..children = [
                 new SpanElement()..text = '[ ${index++} ] : ',
-                anyRef(_isolate, element, _instances, queue: _r.queue)
+                anyRef(_isolate, element, _objects, queue: _r.queue)
               ])
             .toList()
               ..addAll(_createShowMoreButton());
@@ -266,9 +283,9 @@ class InstanceRefElement extends HtmlElement implements Renderable {
             .map((association) => new DivElement()
               ..children = [
                 new SpanElement()..text = '[ ',
-                anyRef(_isolate, association.key, _instances, queue: _r.queue),
+                anyRef(_isolate, association.key, _objects, queue: _r.queue),
                 new SpanElement()..text = ' ] : ',
-                anyRef(_isolate, association.value, _instances, queue: _r.queue)
+                anyRef(_isolate, association.value, _objects, queue: _r.queue)
               ])
             .toList()
               ..addAll(_createShowMoreButton());
@@ -294,8 +311,7 @@ class InstanceRefElement extends HtmlElement implements Renderable {
       case M.InstanceKind.mirrorReference:
         return [
           new SpanElement()..text = '<referent> : ',
-          new InstanceRefElement(_isolate, _loadedInstance.referent, _instances,
-              queue: _r.queue)
+          anyRef(_isolate, _loadedInstance.referent, _objects, queue: _r.queue)
         ];
       case M.InstanceKind.stackTrace:
         return [
@@ -306,11 +322,11 @@ class InstanceRefElement extends HtmlElement implements Renderable {
       case M.InstanceKind.weakProperty:
         return [
           new SpanElement()..text = '<key> : ',
-          new InstanceRefElement(_isolate, _loadedInstance.key, _instances,
+          new InstanceRefElement(_isolate, _loadedInstance.key, _objects,
               queue: _r.queue),
           new BRElement(),
           new SpanElement()..text = '<value> : ',
-          new InstanceRefElement(_isolate, _loadedInstance.value, _instances,
+          new InstanceRefElement(_isolate, _loadedInstance.value, _objects,
               queue: _r.queue),
         ];
       default: