Converted Observatory error-view element

runtime/observatory/lib/src/app/page.dart

 // Copyright (c) 2014, 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.
 
 part of app;
 
 AllocationProfileRepository _allocationProfileRepository
     = new AllocationProfileRepository();
 ContextRepository _contextRepository = new ContextRepository();
 HeapSnapshotRepository _heapSnapshotRepository
@@ skipping 176 matching lines @@
         new ContextViewElement(app.vm, obj.isolate, obj, app.events,
                                app.notifications,
                                _contextRepository,
                                _retainedSizeRepository,
                                _reachableSizeRepository,
                                _inboundReferencesRepository,
                                _retainingPathRepository,
                                _instanceRepository,
                                queue: app.queue)
       ];
+    } else if (obj is DartError) {
+      container.children = [
+        new ErrorViewElement(app.notifications, obj, queue: app.queue)
+      ];
     } else if (obj is ICData) {
       container.children = [
         new ICDataViewElement(app.vm, obj.isolate, obj, app.events,
                                app.notifications,
                                _icdataRepository,
                                _retainedSizeRepository,
                                _reachableSizeRepository,
                                _inboundReferencesRepository,
                                _retainingPathRepository,
                                _instanceRepository,
@@ skipping 370 matching lines @@
     assert(element != null);
   }
 
   void _visit(Uri uri) {
     assert(element != null);
     assert(canVisit(uri));
   }
 
   bool canVisit(Uri uri) => uri.path == 'timeline';
 }