Selection follows focus/activedescendant in single selection containers

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

 /*
  * Copyright (C) 2008, 2009, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nuanti Ltd.
  *
  * 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
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 949 matching lines @@
 
   // High-level accessibility tree access. Other modules should only use these
   // functions.
   const AXObjectVector& Children();
   AXObjectImpl* ParentObject() const;
   AXObjectImpl* ParentObjectIfExists() const;
   virtual AXObjectImpl* ComputeParent() const = 0;
   virtual AXObjectImpl* ComputeParentIfExists() const { return 0; }
   AXObjectImpl* CachedParentObject() const { return parent_; }
   AXObjectImpl* ParentObjectUnignored() const;
+  AXObjectImpl* ContainerWidget() const;
+  bool IsContainerWidget() const;
 
   // Low-level accessibility tree exploration, only for use within the
   // accessibility module.
   virtual AXObjectImpl* RawFirstChild() const { return 0; }
   virtual AXObjectImpl* RawNextSibling() const { return 0; }
   virtual void AddChildren() {}
   virtual bool CanHaveChildren() const { return true; }
   bool HasChildren() const { return have_children_; }
   virtual void UpdateChildrenIfNecessary();
   virtual bool NeedsToUpdateChildren() const { return false; }
@@ skipping 162 matching lines @@
 
 DEFINE_TYPE_CASTS(AXObjectImpl, AXObject, obj, true, true);
 
 #define DEFINE_AX_OBJECT_TYPE_CASTS(thisType, predicate)               \
   DEFINE_TYPE_CASTS(thisType, AXObjectImpl, object, object->predicate, \
                     object.predicate)
 
 }  // namespace blink
 
 #endif  // AXObjectImpl_h