Add view for MegamorphicCache. Update view for ObjectPool.

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

Index: runtime/observatory/lib/src/elements/objectpool_view.dart
diff --git a/runtime/observatory/lib/src/elements/objectpool_view.dart b/runtime/observatory/lib/src/elements/objectpool_view.dart
index 5b320a1c97b5b90425d7ef644937a274af2956d8..1e0819876d3bb816f6ccaf1fc6e10f7532898e32 100644
--- a/runtime/observatory/lib/src/elements/objectpool_view.dart
+++ b/runtime/observatory/lib/src/elements/objectpool_view.dart
@@ -12,32 +12,12 @@ import 'package:polymer/polymer.dart';
 @CustomTag('objectpool-view')
 class ObjectPoolViewElement extends ObservatoryElement {
   @published ObjectPool pool;
-  @published List annotatedEntries;
 
   ObjectPoolViewElement.created() : super.created();
 
   bool isServiceObject(o) => o is ServiceObject;
 
-  void poolChanged(oldValue) {
-    annotateExternalLabels();
-  }
-
-  Future annotateExternalLabels() {
-    var tasks = pool.entries.map((entry) {
-     if (entry is String) {
-       var addr = entry.substring(2);
-       return pool.isolate.getObjectByAddress(addr).then((result) {
-         return result is ServiceObject ? result : null;
-       });
-     } else {
-       return new Future.value(null);
-     }
-    });
-
-    return Future.wait(tasks).then((results) => annotatedEntries = results);
-  }
-
   Future refresh() {
-    return pool.reload().then((_) => annotateExternalLabels());
+    return pool.reload();
   }
 }