Commit f22eda22fa50c3ed10a2d88d953d8c5864bf6004

itemRef is now a DOMSettableTokenList, fix usage accordingly
microdata.js
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293293 scope = scope.parentNode;
294294 return scope;
295295 }
296 var refIds = splitTokens(root.itemRef);
296 var refIds = root.itemRef;
297297 idloop: for (var i=0; i<refIds.length; i++) {
298298 var candidate = document.getElementById(refIds[i]);
299299 if (!candidate || !elemFilter(candidate))