[DevTools] Event Listeners Sidebar shows window listeners

Source/devtools/front_end/elements/EventListenersSidebarPane.js

Index: Source/devtools/front_end/elements/EventListenersSidebarPane.js
diff --git a/Source/devtools/front_end/elements/EventListenersSidebarPane.js b/Source/devtools/front_end/elements/EventListenersSidebarPane.js
index 9fa00c3bab4ce9761abe9e7f02357f8d85b6802b..15b3cee72d5ebff633760a4049819231a89cff8b 100644
--- a/Source/devtools/front_end/elements/EventListenersSidebarPane.js
+++ b/Source/devtools/front_end/elements/EventListenersSidebarPane.js
@@ -229,7 +229,10 @@ WebInspector.EventListenerBar.prototype = {
 
             WebInspector.ObjectPropertyTreeElement.populateWithProperties(this, properties, [], true, null);
         }
-        this._eventListener.node().resolveToObject(WebInspector.EventListenersSidebarPane._objectGroupName, updateWithNodeObject.bind(this));
+        if (this._eventListener.node())
+            this._eventListener.node().resolveToObject(WebInspector.EventListenersSidebarPane._objectGroupName, updateWithNodeObject.bind(this));
+        else
+            updateWithNodeObject.call(this, null);
     },
 
     /**
@@ -238,14 +241,17 @@ WebInspector.EventListenerBar.prototype = {
     _setNodeTitle: function(linkifier)
     {
         var node = this._eventListener.node();
-        if (!node)
-            return;
 
         this.listItemElement.removeChildren();
         var title = this.listItemElement.createChild("span");
         var subtitle = this.listItemElement.createChild("span", "event-listener-tree-subtitle");
         subtitle.appendChild(linkifier.linkifyRawLocation(this._eventListener.location(), this._eventListener.sourceName()));
 
+        if (!node) {
+            title.textContent = "window";
+            return;
+        }
+
         if (node.nodeType() === Node.DOCUMENT_NODE) {
             title.textContent = "document";
             return;