Removed polymer & mirror from Observatory

runtime/observatory/lib/src/elements/context_ref.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
   show IsolateRef, ContextRef;
 import 'package:observatory/src/elements/helpers/rendering_scheduler.dart';
 import 'package:observatory/src/elements/helpers/tag.dart';
 import 'package:observatory/src/elements/helpers/uris.dart';
 
 class ContextRefElement extends HtmlElement implements Renderable {
-  static const tag = const Tag<ContextRefElement>('context-ref-wrapped');
+  static const tag = const Tag<ContextRefElement>('context-ref');
 
   RenderingScheduler<ContextRefElement> _r;
 
   Stream<RenderedEvent<ContextRefElement>> get onRendered => _r.onRendered;
 
   M.IsolateRef _isolate;
   M.ContextRef _context;
 
   M.IsolateRef get isolate => _isolate;
   M.ContextRef get context => _context;
@@ skipping 27 matching lines @@
   void render() {
     children = [
       new AnchorElement(href: Uris.inspect(_isolate, object: _context))
         ..children = [
           new SpanElement()..classes = ['emphasize']..text = 'Context',
           new SpanElement()..text = ' (${_context.length})'
         ]
     ];
   }
 }