Add ARIA panel to accessibility sidebar pane

third_party/WebKit/Source/devtools/front_end/accessibility/AccessibilityNodeView.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @constructor
  * @extends {WebInspector.AccessibilitySubPane}
  */
 WebInspector.AXNodeSubPane = function()
 {
     WebInspector.AccessibilitySubPane.call(this, WebInspector.UIString("Computed Properties"));
 
     this._noNodeInfo = this.createInfo(WebInspector.UIString("No accessibility node"));
     this._ignoredInfo = this.createInfo(WebInspector.UIString("Accessibility node not exposed"), "ax-ignored-info hidden");
 
     this._treeOutline = this.createTreeOutline();
     this._ignoredReasonsTree = this.createTreeOutline();
+
+    this.element.classList.add("accessibility-computed");
 };
 
 
 WebInspector.AXNodeSubPane.prototype = {
     /**
      * @param {?AccessibilityAgent.AXNode} axNode
      * @override
      */
     setAXNode: function(axNode)
     {
@@ skipping 70 matching lines @@
 
         for (var propertySet of [AccessibilityAgent.AXWidgetAttributes, AccessibilityAgent.AXWidgetStates, AccessibilityAgent.AXGlobalStates, AccessibilityAgent.AXLiveRegionAttributes, AccessibilityAgent.AXRelationshipAttributes]) {
             for (var propertyKey in propertySet) {
                 var property = propertySet[propertyKey];
                 if (property in propertyMap)
                     addProperty(propertyMap[property]);
             }
         }
     },
 
+    /**
+     * @override
+     * @param {?WebInspector.DOMNode} node
+     */
+    setNode: function(node)
+    {
+        WebInspector.AccessibilitySubPane.prototype.setNode.call(this, node);
+        this._axNode = null;
+    },
+
     __proto__: WebInspector.AccessibilitySubPane.prototype
 };
 
 /**
  * @constructor
  * @extends {TreeElement}
  * @param {!WebInspector.Target} target
  */
 WebInspector.AXNodePropertyTreeElement = function(target)
 {
@@ skipping 558 matching lines @@
         reasonElement = WebInspector.formatLocalized("Static text node is used as name for\u00a0", []);
         break;
     case "uninteresting":
         reasonElement = WebInspector.formatLocalized("Element not interesting for accessibility.", []);
         break;
     }
     if (reasonElement)
         reasonElement.classList.add("ax-reason");
     return reasonElement;
 };