Don't sync DOM selection for root a11y node

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

 // Copyright 2015 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.
 /**
  * @unrestricted
  */
 Accessibility.AccessibilitySidebarView = class extends UI.ThrottledWidget {
   constructor() {
     super();
     this._node = null;
     this._axNode = null;
     this._sidebarPaneStack = UI.viewManager.createStackLocation();
-    this._treeSubPane = new Accessibility.AXTreePane();
+    this._treeSubPane = new Accessibility.AXTreePane(this);
     this._sidebarPaneStack.showView(this._treeSubPane);
     this._ariaSubPane = new Accessibility.ARIAAttributesPane();
     this._sidebarPaneStack.showView(this._ariaSubPane);
     this._axNodeSubPane = new Accessibility.AXNodeSubPane();
     this._sidebarPaneStack.showView(this._axNodeSubPane);
     this._sidebarPaneStack.widget().show(this.element);
     UI.context.addFlavorChangeListener(SDK.DOMNode, this._pullNode, this);
     this._pullNode();
   }
 
   /**
    * @return {?SDK.DOMNode}
    */
   node() {
     return this._node;
   }
 
   /**
+   * @param {?SDK.DOMNode} node
+   */
+  setNode(node) {
+    this._node = node;
+    this.update();
+  }
+
+  /**
    * @param {?Accessibility.AccessibilityNode} axNode
    */
   accessibilityNodeCallback(axNode) {
     if (!axNode)
       return;
 
     this._axNode = axNode;
 
     if (axNode.ignored())
       this._sidebarPaneStack.removeView(this._ariaSubPane);
@@ skipping 49 matching lines @@
   willHide() {
     SDK.targetManager.removeModelListener(SDK.DOMModel, SDK.DOMModel.Events.AttrModified, this._onAttrChange, this);
     SDK.targetManager.removeModelListener(SDK.DOMModel, SDK.DOMModel.Events.AttrRemoved, this._onAttrChange, this);
     SDK.targetManager.removeModelListener(
         SDK.DOMModel, SDK.DOMModel.Events.CharacterDataModified, this._onNodeChange, this);
     SDK.targetManager.removeModelListener(
         SDK.DOMModel, SDK.DOMModel.Events.ChildNodeCountUpdated, this._onNodeChange, this);
   }
 
   _pullNode() {
-    this._node = UI.context.flavor(SDK.DOMNode);
-    this.update();
+    this.setNode(UI.context.flavor(SDK.DOMNode));
   }
 
   /**
    * @param {!Common.Event} event
    */
   _onAttrChange(event) {
     if (!this.node())
       return;
     var node = event.data.node;
     if (this.node() !== node)
@@ skipping 67 matching lines @@
   createTreeOutline() {
     var treeOutline = new UI.TreeOutlineInShadow();
     treeOutline.registerRequiredCSS('accessibility/accessibilityNode.css');
     treeOutline.registerRequiredCSS('components/objectValue.css');
 
     treeOutline.element.classList.add('hidden');
     this.element.appendChild(treeOutline.element);
     return treeOutline;
   }
 };