Removed polymer & mirror from Observatory

runtime/observatory/lib/src/elements/script_ref_wrapper.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/app.dart';
-import 'package:observatory/service_html.dart' show Script;
-import 'package:observatory/src/elements/script_ref.dart';
-import 'package:observatory/src/elements/helpers/tag.dart';
-import 'package:observatory/src/elements/shims/binding.dart';
-
-@bindable
-class ScriptRefElementWrapper extends HtmlElement {
-  static const binder = const Binder<ScriptRefElementWrapper>(const {
-      'ref': #ref
-    });
-
-  static const tag = const Tag<ScriptRefElementWrapper>('script-ref');
-
-  Script _script;
-
-  Script get ref => _script;
-
-  set ref(Script value) {
-    _script = value;
-    render();
-  }
-
-  ScriptRefElementWrapper.created() : super.created() {
-    binder.registerCallback(this);
-    createShadowRoot();
-    render();
-  }
-
-  @override
-  void attached() {
-    super.attached();
-    render();
-  }
-
-  Future render() async {
-    shadowRoot.children = [];
-    if (_script == null) {
-      return;
-    }
-
-    shadowRoot.children = [
-      new StyleElement()
-        ..text = '''
-        script-ref-wrapped > a[href]:hover {
-            text-decoration: underline;
-        }
-        script-ref-wrapped > a[href] {
-            color: #0489c3;
-            text-decoration: none;
-        }''',
-      new ScriptRefElement(_script.isolate, _script,
-                                 queue: ObservatoryApplication.app.queue)
-    ];
-  }
-}