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

pkg/polymer/lib/polymer.html

Index: pkg/polymer/lib/polymer.html
diff --git a/pkg/polymer/lib/polymer.html b/pkg/polymer/lib/polymer.html
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index 0000000000000000000000000000000000000000..9a90ea1a2c7672e36ca53d3c67a90ac50afd62e3
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+<!--
+ Copyright 2013 The Polymer Authors. All rights reserved.
+ Use of this source code is governed by a BSD-style
+ license that can be found in the LICENSE file.
+-->
+
+<script src="src/js/use_native_dartium_shadowdom.js"></script>
+
+<!--
+These two files are from the Polymer project:
+https://github.com/Polymer/platform/ and https://github.com/Polymer/polymer/.
+
+You can replace platform.js and polymer.html with different versions if desired.
+-->
+<!-- minified for deployment: -->
+<script src="../../packages/web_components/platform.js"></script>
+<link rel="import" href="src/js/polymer/polymer.html">
+
+<!-- unminfied for debugging:
+<script src="../../packages/web_components/platform.concat.js"></script>
+<script src="src/js/polymer/polymer.concat.js"></script>
+<link rel="import" href="src/js/polymer/polymer-body.html">
+-->
+
+<!-- Teach dart2js about Shadow DOM polyfill objects. -->
+<script src="../../packages/web_components/dart_support.js"></script>