[DevTools] Extracted EventListenersTreeOutline

LayoutTests/http/tests/inspector/elements-test.js

 var initialize_ElementTest = function() {
 
 InspectorTest.preloadPanel("elements");
 
 InspectorTest.inlineStyleSection = function()
 {
     return WebInspector.panels.elements.sidebarPanes.styles._sectionBlocks[0].sections[0];
 }
 
 InspectorTest.computedStyleSidebarPane = function()
@@ skipping 395 matching lines @@
 }
 
 InspectorTest.toggleMatchedStyleProperty = function(propertyName, checked)
 {
     var treeItem = InspectorTest.getMatchedStylePropertyTreeItem(propertyName);
     treeItem._toggleEnabled({ target: { checked: checked }, consume: function() { } });
 }
 
 InspectorTest.expandAndDumpSelectedElementEventListeners = function(callback)
 {
-    InspectorTest.addSniffer(WebInspector.EventListenersSidebarPane.prototype, "_onEventListeners", listenersArrived);
+    InspectorTest.addSniffer(WebInspector.EventListenersSidebarPane.prototype, "_eventListenersArivedForTest", listenersArrived);
 
     var sidebarPane = WebInspector.panels.elements.sidebarPanes.eventListeners;
     sidebarPane.expand();
 
     function listenersArrived()
     {
-        var listenerTypes = sidebarPane._treeOutline.rootElement().children();
+        var listenerTypes = sidebarPane._eventListenersView._treeOutline.rootElement().children();
         for (var i = 0; i < listenerTypes.length; ++i) {
             listenerTypes[i].expand();
             var listenerItems = listenerTypes[i].children();
             for (var j = 0; j < listenerItems.length; ++j)
                 listenerItems[j].expand();
         }
         InspectorTest.runAfterPendingDispatches(objectsExpanded);
     }
 
     function objectsExpanded()
     {
-        var listenerTypes = sidebarPane._treeOutline.rootElement().children();
+        var listenerTypes = sidebarPane._eventListenersView._treeOutline.rootElement().children();
         for (var i = 0; i < listenerTypes.length; ++i) {
             var eventType = listenerTypes[i]._title;
             InspectorTest.addResult("");
             InspectorTest.addResult("======== " + eventType + " ========");
             var listenerItems = listenerTypes[i].children();
             for (var j = 0; j < listenerItems.length; ++j)
                 InspectorTest.dumpObjectPropertyTreeElement(listenerItems[j]);
         }
         callback();
     }
@@ skipping 541 matching lines @@
         for (nodeRow of nodeUI._rows) {
             for (var ui of nodeRow.animations) {
                 InspectorTest.addResult(ui._nameElement.outerHTML);
                 InspectorTest.addResult(ui._svg.outerHTML);
             }
         }
     }
 }
 
 };