[polymer] interop with polymer-element and polymer.js

pkg/polymer/lib/polymer.dart

 // Copyright (c) 2012, 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.
 
 /// Custom HTML tags, data binding, and templates for building
 /// structured, encapsulated, client-side web apps.
 ///
 /// Polymer.dart, the next evolution of Web UI,
 /// is an in-progress Dart port of the
 /// [Polymer project](http://www.polymer-project.org/).
@@ skipping 19 matching lines @@
 /// Example code, project status, and
 /// information about how to get started using Polymer.dart in your apps.
 ///
 /// * [polymer.dart package](http://pub.dartlang.org/packages/polymer):
 /// More details, such as the current major release number.
 ///
 /// * [Upgrading to Polymer.dart](http://www.dartlang.org/polymer-dart/upgrading-to-polymer-from-web-ui.html):
 /// Tips for converting your apps from Web UI to Polymer.dart.
 library polymer;
 
+// Last ported from:
+// https://github.com/Polymer/polymer-dev/tree/37eea00e13b9f86ab21c85a955585e8e4237e3d2
+// TODO(jmesserly): we need to do a redundancy check. Some code like the FOUC
+// protection seems out of date, as if left over from the older
+// b7200854b2441a22ce89f6563963f36c50f5150d baseline.
+
 import 'dart:async';
-import 'dart:collection' show HashMap, HashSet;
+import 'dart:collection' show HashMap, HashSet, LinkedHashMap;
 import 'dart:html';
-import 'dart:js' as js;
+import 'dart:js' as js show context;
+import 'dart:js' hide context;
 
 @MirrorsUsed(metaTargets:
     const [Reflectable, ObservableProperty, PublishedProperty, CustomTag,
         _InitMethodAnnotation],
     targets: const [PublishedProperty],
     override: const ['smoke.mirrors', 'polymer'])
 import 'dart:mirrors';
 
 import 'package:logging/logging.dart' show Logger, Level;
 import 'package:observe/observe.dart';
 import 'package:observe/src/dirty_check.dart' show dirtyCheckZone;
 import 'package:path/path.dart' as path;
 import 'package:polymer_expressions/polymer_expressions.dart'
     show PolymerExpressions;
 import 'package:smoke/smoke.dart' as smoke;
 import 'package:smoke/mirrors.dart' as smoke;
 import 'package:template_binding/template_binding.dart';
 import 'package:web_components/polyfill.dart' show customElementsReady;
 
 import 'deserialize.dart' as deserialize;
 
 export 'package:observe/observe.dart';
 export 'package:observe/html.dart';
 
-part 'src/boot.dart';
 part 'src/declaration.dart';
 part 'src/instance.dart';
 part 'src/job.dart';
 part 'src/loader.dart';