Removed polymer & mirror from Observatory

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

 // Copyright (c) 2016, 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.
 
 library source_link_element;
 
 import 'dart:html';
 import 'dart:async';
 import 'package:observatory/models.dart'
   show IsolateRef, SourceLocation, Script, ScriptRepository;
 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 SourceLinkElement extends HtmlElement implements Renderable {
-  static const tag = const Tag<SourceLinkElement>('source-link-wrapped');
+  static const tag = const Tag<SourceLinkElement>('source-link');
 
   RenderingScheduler _r;
 
   Stream<RenderedEvent<SourceLinkElement>> get onRendered => _r.onRendered;
 
   IsolateRef _isolate;
   SourceLocation _location;
   Script _script;
   ScriptRepository _repository;
 
@@ skipping 41 matching lines @@
       int column = _script.tokenToCol(token);
       children = [
         new AnchorElement(
             href: Uris.inspect(isolate, object: _script, pos: token))
           ..title = _script.uri
           ..text = '${label}:${line}:${column}'
       ];
     }
   }
 }