DevTools: Added ARIA roles & states to treeoutline

third_party/WebKit/Source/devtools/front_end/elements/ElementsTreeOutline.js

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2008 Matt Lilek <webkit@mattlilek.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:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 30 matching lines @@
     super();
 
     this._domModel = domModel;
     this._treeElementSymbol = Symbol('treeElement');
     var shadowContainer = createElement('div');
     this._shadowRoot = UI.createShadowRootWithCoreStyles(shadowContainer, 'elements/elementsTreeOutline.css');
     var outlineDisclosureElement = this._shadowRoot.createChild('div', 'elements-disclosure');
 
     this._element = this.element;
     this._element.classList.add('elements-tree-outline', 'source-code');
+    UI.ARIAUtils.setAccessibleName(this._element, Common.UIString('Page DOM'));
     this._element.addEventListener('mousedown', this._onmousedown.bind(this), false);
     this._element.addEventListener('mousemove', this._onmousemove.bind(this), false);
     this._element.addEventListener('mouseleave', this._onmouseleave.bind(this), false);
     this._element.addEventListener('dragstart', this._ondragstart.bind(this), false);
     this._element.addEventListener('dragover', this._ondragover.bind(this), false);
     this._element.addEventListener('dragleave', this._ondragleave.bind(this), false);
     this._element.addEventListener('drop', this._ondrop.bind(this), false);
     this._element.addEventListener('dragend', this._ondragend.bind(this), false);
     this._element.addEventListener('contextmenu', this._contextMenuEventFired.bind(this), false);
     this._element.addEventListener('clipboard-beforecopy', this._onBeforeCopy.bind(this), false);
@@ skipping 1627 matching lines @@
      */
     function resolved(node) {
       if (node) {
         this.treeOutline._selectedDOMNode = node;
         this.treeOutline._selectedNodeChanged();
       }
     }
     return true;
   }
 };