Implement the inert attribute

third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.h

 // 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.
 
 #ifndef InspectorAccessibilityAgent_h
 #define InspectorAccessibilityAgent_h
 
 #include "core/inspector/InspectorBaseAgent.h"
 #include "core/inspector/protocol/Accessibility.h"
 #include "modules/ModulesExport.h"
@@ skipping 56 matching lines @@
                          AXObject* inspected_ax_object,
                          AXNode&,
                          std::unique_ptr<protocol::Array<AXNode>>& nodes,
                          AXObjectCacheImpl&) const;
   void AddSiblingsOfIgnored(
       std::unique_ptr<protocol::Array<AXNodeId>>& child_ids,
       AXObject& parent_ax_object,
       AXObject* inspected_ax_object,
       std::unique_ptr<protocol::Array<AXNode>>& nodes,
       AXObjectCacheImpl&) const;
+  void addChild(std::unique_ptr<protocol::Array<AXNodeId>>& child_ids,
+                AXObject& child_ax_object,
+                AXObject* inspected_ax_object,
+                std::unique_ptr<protocol::Array<AXNode>>& nodes,
+                AXObjectCacheImpl&) const;
   void AddChildren(AXObject&,
                    AXObject* inspected_ax_object,
                    std::unique_ptr<protocol::Array<AXNodeId>>& child_ids,
                    std::unique_ptr<protocol::Array<AXNode>>& nodes,
                    AXObjectCacheImpl&) const;
 
   Member<Page> page_;
   Member<InspectorDOMAgent> dom_agent_;
 };
 
 }  // namespace blink
 
 #endif  // InspectorAccessibilityAgent_h