[DevTools] Event Listeners Sidebar shows window listeners

Source/devtools/front_end/sdk/RuntimeModel.js

Index: Source/devtools/front_end/sdk/RuntimeModel.js
diff --git a/Source/devtools/front_end/sdk/RuntimeModel.js b/Source/devtools/front_end/sdk/RuntimeModel.js
index 5c26cf1a2992ef71546bef2ed816e3072aa36ba7..a0fda26d856faaa7bd271b95510e115521f08a48 100644
--- a/Source/devtools/front_end/sdk/RuntimeModel.js
+++ b/Source/devtools/front_end/sdk/RuntimeModel.js
@@ -488,3 +488,37 @@ WebInspector.ExecutionContext.prototype = {
 
     __proto__: WebInspector.SDKObject.prototype
 }
+
+/**
+ * @constructor
+ * @extends {WebInspector.EventListener<RuntimeAgent.EventListener>}
+ * @param {!WebInspector.Target} target
+ * @param {!RuntimeAgent.EventListener} payload
+ * @param {string} description
+ */
+WebInspector.RuntimeModel.ObjectEventListener = function(target, payload, description)
+{
+    WebInspector.EventListener.call(this, target, payload);
+    this._description = description;
+}
+
+WebInspector.RuntimeModel.ObjectEventListener.prototype = {
+    /**
+     * @override
+     * @return {boolean}
+     */
+    isObjectEventListener: function()
+    {
+        return true;
+    },
+
+    /**
+     * @return {string}
+     */
+    description: function()
+    {
+        return this._description;
+    },
+
+    __proto__: WebInspector.EventListener.prototype
+}