Show reasons why nodes are ignored in accessibility sidebar

Source/devtools/front_end/ui/UIUtils.js

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2007 Matt Lilek (pewtermoose@gmail.com).
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
@@ skipping 545 matching lines @@
     var str = num + "";
     var re = /(\d+)(\d{3})/;
     while (str.match(re))
         str = str.replace(re, "$1\u2009$2"); // \u2009 is a thin space.
     return str;
 }
 
 /**
  * @param {string} format
  * @param {?ArrayLike} substitutions
- * @param {!Object.<string, function(string, ...):*>} formatters
- * @param {string} initialValue
- * @param {function(string, string): ?} append
- * @return {!{formattedResult: string, unusedSubstitutions: ?ArrayLike}};
+ * @param {?string} initialValue
+ * @return {!Element}
  */
-WebInspector.formatLocalized = function(format, substitutions, formatters, initialValue, append)
+WebInspector.formatLocalized = function(format, substitutions, initialValue)
 {
-    return String.format(WebInspector.UIString(format), substitutions, formatters, initialValue, append);
+    var element = createElement("span");
+    var formatters = {
+        s: function(substitution)
+        {
+            return substitution;
+        }
+    };
+    function append(a, b)
+    {
+        if (typeof b === "string")
+            b = createTextNode(b);
+        else if (b.shadowRoot)
+            b = createTextNode(b.shadowRoot.lastChild.textContent);
+        element.appendChild(b);
+    }
+    String.format(WebInspector.UIString(format), substitutions, formatters, initialValue, append);
+    return element;
 }
 
 /**
  * @return {string}
  */
 WebInspector.openLinkExternallyLabel = function()
 {
     return WebInspector.UIString.capitalize("Open ^link in ^new ^tab");
 }
 
@@ skipping 843 matching lines @@
         // Due to the nature of regex, |items| array has matched elements on its even indexes.
         var items = text.replace(regex, "\0$1\0").split("\0");
         for (var i = 0; i < items.length; ++i) {
             var processedNode = i % 2 ? processor(items[i]) : this._runProcessor(processorIndex + 1, items[i]);
             container.appendChild(processedNode);
         }
 
         return container;
     }
 }