Don't sync DOM selection for root a11y node

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

Index: third_party/WebKit/Source/devtools/front_end/accessibility/AccessibilitySidebarView.js
diff --git a/third_party/WebKit/Source/devtools/front_end/accessibility/AccessibilitySidebarView.js b/third_party/WebKit/Source/devtools/front_end/accessibility/AccessibilitySidebarView.js
index bac6c271de99ace88b62b955f4fb92efabca7308..7e5c82ed03b5347ef886c1190320332057b7cd74 100644
--- a/third_party/WebKit/Source/devtools/front_end/accessibility/AccessibilitySidebarView.js
+++ b/third_party/WebKit/Source/devtools/front_end/accessibility/AccessibilitySidebarView.js
@@ -10,7 +10,7 @@ Accessibility.AccessibilitySidebarView = class extends UI.ThrottledWidget {
     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);
@@ -29,6 +29,14 @@ Accessibility.AccessibilitySidebarView = class extends UI.ThrottledWidget {
   }
 
   /**
+   * @param {?SDK.DOMNode} node
+   */
+  setNode(node) {
+    this._node = node;
+    this.update();
+  }
+
+  /**
    * @param {?Accessibility.AccessibilityNode} axNode
    */
   accessibilityNodeCallback(axNode) {
@@ -98,8 +106,7 @@ Accessibility.AccessibilitySidebarView = class extends UI.ThrottledWidget {
   }
 
   _pullNode() {
-    this._node = UI.context.flavor(SDK.DOMNode);
-    this.update();
+    this.setNode(UI.context.flavor(SDK.DOMNode));
   }
 
   /**