Removed polymer & mirror from Observatory

runtime/observatory/lib/src/elements/object_common.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:html';
 import 'dart:async';
 import 'package:observatory/models.dart' as M;
 import 'package:observatory/src/elements/class_ref.dart';
 import 'package:observatory/src/elements/helpers/rendering_scheduler.dart';
 import 'package:observatory/src/elements/helpers/tag.dart';
 import 'package:observatory/src/elements/inbound_references.dart';
 import 'package:observatory/src/elements/retaining_path.dart';
 import 'package:observatory/src/elements/sentinel_value.dart';
 import 'package:observatory/utils.dart';
 
 class ObjectCommonElement extends HtmlElement implements Renderable {
-  static const tag = const Tag<ObjectCommonElement>('object-common-wrapped',
+  static const tag = const Tag<ObjectCommonElement>('object-common',
       dependencies: const [
         ClassRefElement.tag,
         InboundReferencesElement.tag,
         RetainingPathElement.tag,
         SentinelValueElement.tag
       ]);
 
   RenderingScheduler<ObjectCommonElement> _r;
 
   Stream<RenderedEvent<ObjectCommonElement>> get onRendered => _r.onRendered;
@@ skipping 180 matching lines @@
     button.onClick.listen((_) async {
         button.disabled = true;
         _loadingRetainedBytes = true;
         _retainedSize = await _retainedSizes.get(_isolate, _object.id);
         _r.dirty();
       });
     content.add(button);
     return content;
   }
 }