| Index: pkg/shadow_dom/tool/play.html
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| diff --git a/pkg/shadow_dom/tool/play.html b/pkg/shadow_dom/tool/play.html
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| new file mode 100644
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| index 0000000000000000000000000000000000000000..f17b4710d59a3089627f0caec478b8a2b6d66e26
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| --- /dev/null
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| +++ b/pkg/shadow_dom/tool/play.html
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| @@ -0,0 +1,39 @@
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| +<!DOCTYPE html>
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| +<!--
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| +Copyright 2012 The Polymer Authors. All rights reserved.
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| +Use of this source code is goverened by a BSD-style
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| +license that can be found in the LICENSE file.
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| +-->
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| +<meta charset="utf-8">
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| +<script src="shadowdom.js"></script>
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| +<style>
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| +
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| +.el,
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| +.sr {
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| +  height: 300px;
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| +  width: 300px;
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| +}
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| +
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| +</style>
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| +<textarea class="el" placeholder="Element host"></textarea>
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| +<textarea class="sr" placeholder="Shadow Root"></textarea>
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| +<button onclick="update()">Update</button>
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| +
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| +<div class="test">Real</div>
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| +
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| +<script>
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| +
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| +var el = document.querySelector('.test');
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| +var sr = el.createShadowRoot();
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| +
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| +sr.innerHTML = 'Before <content></content> After';
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| +
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| +function update() {
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| +  el.innerHTML = document.querySelector('.el').value;
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| +  sr.innerHTML = document.querySelector('.sr').value;
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| +}
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| +
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| +document.querySelector('.el').value = el.innerHTML;
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| +document.querySelector('.sr').value = sr.innerHTML;
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| +
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| +</script>
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| 
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