Omnibus Observatory UI fixes:

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

Index: runtime/observatory/lib/src/elements/debugger.dart
diff --git a/runtime/observatory/lib/src/elements/debugger.dart b/runtime/observatory/lib/src/elements/debugger.dart
index b046adeb924e5f598d1ca8d1d5edfdcf7b899836..5a56306b568883a1a6fd4191b25743895c357473 100644
--- a/runtime/observatory/lib/src/elements/debugger.dart
+++ b/runtime/observatory/lib/src/elements/debugger.dart
@@ -178,7 +178,7 @@ class PrintCommand extends DebuggerCommand {
       debugger.console.print(response.message);
     } else {
       debugger.console.print('= ', newline: false);
-      debugger.console.printRef(debugger.isolate, response, debugger.instances);
+      debugger.console.printRef(debugger.isolate, response, debugger.objects);
     }
   }
 
@@ -1646,7 +1646,7 @@ class ObservatoryDebugger extends Debugger {
           // This seems to be missing if we are paused-at-exception after
           // paused-at-isolate-exit. Maybe we shutdown part of the debugger too
           // soon?
-          console.printRef(isolate, event.exception, instances);
+          console.printRef(isolate, event.exception, objects);
         } else {
           console.print('Paused at ${script.name}:${line}:${col}');
         }
@@ -2000,23 +2000,23 @@ class DebuggerPageElement extends HtmlElement implements Renderable {
 
   S.Isolate _isolate;
   ObservatoryDebugger _debugger;
-  M.InstanceRepository _instances;
+  M.ObjectRepository _objects;
   M.ScriptRepository _scripts;
   M.EventRepository _events;
 
-  factory DebuggerPageElement(S.Isolate isolate, M.InstanceRepository instances,
+  factory DebuggerPageElement(S.Isolate isolate, M.ObjectRepository objects,
       M.ScriptRepository scripts, M.EventRepository events) {
     assert(isolate != null);
-    assert(instances != null);
+    assert(objects != null);
     assert(scripts != null);
     assert(events != null);
     final e = document.createElement(tag.name);
     final debugger = new ObservatoryDebugger(isolate);
     debugger.page = e;
-    debugger.instances = instances;
+    debugger.objects = objects;
     e._isolate = isolate;
     e._debugger = debugger;
-    e._instances = instances;
+    e._objects = objects;
     e._scripts = scripts;
     e._events = events;
     return e;
@@ -2043,7 +2043,7 @@ class DebuggerPageElement extends HtmlElement implements Renderable {
 
     final stackDiv = new DivElement()..classes = ['stack'];
     final stackElement = new DebuggerStackElement(
-        _isolate, _debugger, stackDiv, _instances, _scripts, _events);
+        _isolate, _debugger, stackDiv, _objects, _scripts, _events);
     stackDiv.children = [stackElement];
     final consoleDiv = new DivElement()
       ..classes = ['console']
@@ -2155,7 +2155,7 @@ class DebuggerStackElement extends HtmlElement implements Renderable {
   static const tag = const Tag<DebuggerStackElement>('debugger-stack');
 
   S.Isolate _isolate;
-  M.InstanceRepository _instances;
+  M.ObjectRepository _objects;
   M.ScriptRepository _scripts;
   M.EventRepository _events;
   Element _scroller;
@@ -2192,20 +2192,20 @@ class DebuggerStackElement extends HtmlElement implements Renderable {
       S.Isolate isolate,
       ObservatoryDebugger debugger,
       Element scroller,
-      M.InstanceRepository instances,
+      M.ObjectRepository objects,
       M.ScriptRepository scripts,
       M.EventRepository events) {
     assert(isolate != null);
     assert(debugger != null);
     assert(scroller != null);
-    assert(instances != null);
+    assert(objects != null);
     assert(scripts != null);
     assert(events != null);
     final e = document.createElement(tag.name);
     e._isolate = isolate;
     e._debugger = debugger;
     e._scroller = scroller;
-    e._instances = instances;
+    e._objects = objects;
     e._scripts = scripts;
     e._events = events;
 
@@ -2263,7 +2263,7 @@ class DebuggerStackElement extends HtmlElement implements Renderable {
 
   _addFrame(List frameList, S.Frame frameInfo) {
     final frameElement = new DebuggerFrameElement(
-        _isolate, frameInfo, _scroller, _instances, _scripts, _events,
+        _isolate, frameInfo, _scroller, _objects, _scripts, _events,
         queue: app.queue);
 
     if (frameInfo.index == currentFrame) {
@@ -2281,7 +2281,7 @@ class DebuggerStackElement extends HtmlElement implements Renderable {
 
   _addMessage(List messageList, S.ServiceMessage messageInfo) {
     final messageElement = new DebuggerMessageElement(
-        _isolate, messageInfo, _instances, _scripts, _events,
+        _isolate, messageInfo, _objects, _scripts, _events,
         queue: app.queue);
 
     var li = new LIElement();
@@ -2419,7 +2419,7 @@ class DebuggerFrameElement extends HtmlElement implements Renderable {
   M.Isolate _isolate;
   S.Frame _frame;
   S.Frame get frame => _frame;
-  M.InstanceRepository _instances;
+  M.ObjectRepository _objects;
   M.ScriptRepository _scripts;
   M.EventRepository _events;
 
@@ -2454,14 +2454,14 @@ class DebuggerFrameElement extends HtmlElement implements Renderable {
       M.Isolate isolate,
       S.Frame frame,
       Element scroller,
-      M.InstanceRepository instances,
+      M.ObjectRepository objects,
       M.ScriptRepository scripts,
       M.EventRepository events,
       {RenderingQueue queue}) {
     assert(isolate != null);
     assert(frame != null);
     assert(scroller != null);
-    assert(instances != null);
+    assert(objects != null);
     assert(scripts != null);
     assert(events != null);
     final DebuggerFrameElement e = document.createElement(tag.name);
@@ -2469,7 +2469,7 @@ class DebuggerFrameElement extends HtmlElement implements Renderable {
     e._isolate = isolate;
     e._frame = frame;
     e._scroller = scroller;
-    e._instances = instances;
+    e._objects = objects;
     e._scripts = scripts;
     e._events = events;
     return e;
@@ -2537,7 +2537,7 @@ class DebuggerFrameElement extends HtmlElement implements Renderable {
                               _isolate,
                               _frame.function.location,
                               _scripts,
-                              _instances,
+                              _objects,
                               _events,
                               currentPos: _frame.location.tokenPos,
                               variables: _frame.variables,
@@ -2562,7 +2562,7 @@ class DebuggerFrameElement extends HtmlElement implements Renderable {
                                     ..classes = ['memberName']
                                     ..children = [
                                       anyRef(_isolate, homeMethod.dartOwner,
-                                          _instances,
+                                          _objects,
                                           queue: _r.queue)
                                     ]
                                 ]
@@ -2576,7 +2576,7 @@ class DebuggerFrameElement extends HtmlElement implements Renderable {
                               new DivElement()
                                 ..classes = ['memberName']
                                 ..children = [
-                                  anyRef(_isolate, v['value'], _instances,
+                                  anyRef(_isolate, v['value'], _objects,
                                       queue: _r.queue)
                                 ]
                             ])
@@ -2776,7 +2776,7 @@ class DebuggerMessageElement extends HtmlElement implements Renderable {
   S.Isolate _isolate;
   S.ServiceMessage _message;
   S.ServiceObject _preview;
-  M.InstanceRepository _instances;
+  M.ObjectRepository _objects;
   M.ScriptRepository _scripts;
   M.EventRepository _events;
 
@@ -2791,20 +2791,19 @@ class DebuggerMessageElement extends HtmlElement implements Renderable {
   factory DebuggerMessageElement(
       S.Isolate isolate,
       S.ServiceMessage message,
-      M.InstanceRepository instances,
+      M.ObjectRepository objects,
       M.ScriptRepository scripts,
       M.EventRepository events,
       {RenderingQueue queue}) {
     assert(isolate != null);
     assert(message != null);
-    assert(instances != null);
-    assert(instances != null);
+    assert(objects != null);
     assert(events != null);
     final DebuggerMessageElement e = document.createElement(tag.name);
     e._r = new RenderingScheduler(e, queue: queue);
     e._isolate = isolate;
     e._message = message;
-    e._instances = instances;
+    e._objects = objects;
     e._scripts = scripts;
     e._events = events;
     return e;
@@ -2855,7 +2854,7 @@ class DebuggerMessageElement extends HtmlElement implements Renderable {
                               _isolate,
                               _message.handler.location,
                               _scripts,
-                              _instances,
+                              _objects,
                               _events,
                               inDebuggerContext: true,
                               queue: _r.queue)
@@ -2878,7 +2877,7 @@ class DebuggerMessageElement extends HtmlElement implements Renderable {
                           ]..addAll(_preview == null
                               ? const []
                               : [
-                                  anyRef(_isolate, _preview, _instances,
+                                  anyRef(_isolate, _preview, _objects,
                                       queue: _r.queue)
                                 ]))
                       ]
@@ -3073,10 +3072,9 @@ class DebuggerConsoleElement extends HtmlElement implements Renderable {
     }
   }
 
-  void printRef(
-      S.Isolate isolate, S.Instance ref, M.InstanceRepository instances,
+  void printRef(S.Isolate isolate, S.Instance ref, M.ObjectRepository objects,
       {bool newline: true}) {
-    _append(new InstanceRefElement(isolate, ref, instances, queue: app.queue));
+    _append(new InstanceRefElement(isolate, ref, objects, queue: app.queue));
     if (newline) {
       this.newline();
     }