Merge 94716 - Changes to aria-hidden don't change VO navigation

Source/WebCore/accessibility/AccessibilityObject.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 453 matching lines @@
     virtual void increment() { }
     virtual void decrement() { }
 
     virtual void childrenChanged() { }
     virtual void contentChanged() { }
     virtual const AccessibilityChildrenVector& children() { return m_children; }
     virtual void addChildren() { }
     virtual bool canHaveChildren() const { return true; }
     virtual bool hasChildren() const { return m_haveChildren; }
     virtual void updateChildrenIfNecessary();
+    virtual void clearChildren();
+
     virtual void selectedChildren(AccessibilityChildrenVector&) { }
     virtual void visibleChildren(AccessibilityChildrenVector&) { }
     virtual void tabChildren(AccessibilityChildrenVector&) { }
     virtual bool shouldFocusActiveDescendant() const { return false; }
     virtual AccessibilityObject* activeDescendant() const { return 0; }    
     virtual void handleActiveDescendantChanged() { }
     virtual void handleAriaExpandedChanged() { }
     
     static AccessibilityRole ariaRoleToWebCoreRole(const String&);
     const AtomicString& getAttribute(const QualifiedName&) const;
@@ skipping 100 matching lines @@
     // allows for an AccessibilityObject to update its render tree or perform
     // other operations update type operations
     void updateBackingStore();
     
 protected:
     AXID m_id;
     AccessibilityChildrenVector m_children;
     mutable bool m_haveChildren;
     AccessibilityRole m_role;
     
-    virtual void clearChildren();
     virtual bool isDetached() const { return true; }
     
 #if PLATFORM(GTK)
     bool allowsTextRanges() const;
     unsigned getLengthForTextRange() const;
 #else
     bool allowsTextRanges() const { return isTextControl(); }
     unsigned getLengthForTextRange() const { return text().length(); }
 #endif
 
 #if PLATFORM(MAC)
     RetainPtr<AccessibilityObjectWrapper> m_wrapper;
 #elif PLATFORM(WIN) && !OS(WINCE)
     COMPtr<AccessibilityObjectWrapper> m_wrapper;
 #elif PLATFORM(GTK)
     AtkObject* m_wrapper;
 #elif PLATFORM(CHROMIUM)
     RefPtr<AccessibilityObjectWrapper> m_wrapper;
 #endif
 };
 
 } // namespace WebCore
 
 #endif // AccessibilityObject_h