content/test/data/browser_plugin_embedder.html

<script type="text/javascript">
function SetSrc(src) {
  var plugin = document.getElementById('plugin');
  plugin.src = src;
}
function SetSize(w, h) {
  var plugin = document.getElementById('plugin');
  plugin.width = w;
  plugin.height = h;
}
function SetTitle(str) {
  document.title = str;
}
document.title = 'embedder';
</script>

<object id="plugin"
    tabindex="0"
    type="application/browser-plugin"
    width="640"
    height="480"
    border="0px"></object>
<script type="text/javascript">
var plugin = document.getElementById('plugin');
plugin.addEventListener('-internal-instanceid-allocated', function(e) {
  var detail = e.detail ? JSON.parse(e.detail) : {};
  plugin['-internal-attach'](detail.windowId, {});
});
</script>