Clean up unused AX APIs.

Source/modules/accessibility/AXObject.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 578 matching lines @@
     virtual String actionVerb() const;
     virtual AccessibilityButtonState checkboxOrRadioValue() const;
     virtual InvalidState invalidState() const { return InvalidStateUndefined; }
     // Only used when invalidState() returns InvalidStateOther.
     virtual String ariaInvalidValue() const { return String(); }
     virtual String valueDescription() const { return String(); }
     virtual float valueForRange() const { return 0.0f; }
     virtual float maxValueForRange() const { return 0.0f; }
     virtual float minValueForRange() const { return 0.0f; }
     virtual String stringValue() const { return String(); }
-    virtual const AtomicString& textInputType() const { return nullAtom; }
 
     // ARIA attributes.
     virtual AXObject* activeDescendant() const { return 0; }
     virtual String ariaAutoComplete() const { return String(); }
     virtual String ariaDescribedByAttribute() const { return String(); }
-    virtual const AtomicString& ariaDropEffect() const { return nullAtom; }
     virtual void ariaFlowToElements(AccessibilityChildrenVector&) const { }
     virtual void ariaControlsElements(AccessibilityChildrenVector&) const { }
     virtual void ariaOwnsElements(AccessibilityChildrenVector& owns) const { };
     virtual bool ariaHasPopup() const { return false; }
     bool isMultiline() const;
     virtual bool isRichlyEditable() const { return false; }
     virtual String ariaLabeledByAttribute() const { return String(); }
     bool ariaPressedIsPresent() const;
     virtual AccessibilityRole ariaRoleAttribute() const { return UnknownRole; }
     virtual bool ariaRoleHasPresentationalChildren() const { return false; }
-    virtual AccessibilityOptionalBool isAriaGrabbed() const { return OptionalBoolUndefined; }
     virtual AXObject* ancestorForWhichThisIsAPresentationalChild() const { return 0; }
     virtual bool shouldFocusActiveDescendant() const { return false; }
     bool supportsARIAAttributes() const;
     virtual bool supportsARIADragging() const { return false; }
     virtual bool supportsARIADropping() const { return false; }
     virtual bool supportsARIAFlowTo() const { return false; }
     virtual bool supportsARIAOwns() const { return false; }
     bool supportsRangeValue() const;
     virtual SortDirection sortDirection() const { return SortDirectionUndefined; }
 
@@ skipping 169 matching lines @@
     static bool includesARIAWidgetRole(const String&);
     static bool hasInteractiveARIAAttribute(const Element&);
 };
 
 #define DEFINE_AX_OBJECT_TYPE_CASTS(thisType, predicate) \
     DEFINE_TYPE_CASTS(thisType, AXObject, object, object->predicate, object.predicate)
 
 } // namespace blink
 
 #endif // AXObject_h