Introduce "navigation target classification" for spatial navigation

Source/core/svg/SVGElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  * Copyright (C) 2009, 2014 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 207 matching lines @@
     inline bool hasSVGRareData() const { return m_SVGRareData; }
     inline SVGElementRareData* svgRareData() const
     {
         ASSERT(m_SVGRareData);
         return m_SVGRareData.get();
     }
 
     // SVGFitToViewBox::parseAttribute uses reportAttributeParsingError.
     friend class SVGFitToViewBox;
     void reportAttributeParsingError(SVGParsingError, const QualifiedName&, const AtomicString&);
-    bool hasFocusEventListeners() const;
 
 private:
     bool isSVGElement() const = delete; // This will catch anyone doing an unnecessary check.
     bool isStyledElement() const = delete; // This will catch anyone doing an unnecessary check.
 
     RenderStyle* computedStyle(PseudoId = NOPSEUDO);
     virtual RenderStyle* virtualComputedStyle(PseudoId pseudoElementSpecifier = NOPSEUDO) override final { return computedStyle(pseudoElementSpecifier); }
     virtual void willRecalcStyle(StyleRecalcChange) override;
 
     void buildPendingResourcesIfNeeded();
@@ skipping 43 matching lines @@
     template<typename T> inline bool is##thisType(const PassRefPtrWillBeRawPtr<T>& node) { return is##thisType(node.get()); } \
     template<typename T> inline bool is##thisType(const RefPtrWillBeMember<T>& node) { return is##thisType(node.get()); } \
     template <> inline bool isElementOfType<const thisType>(const SVGElement& element) { return is##thisType(element); } \
     DEFINE_ELEMENT_TYPE_CASTS_WITH_FUNCTION(thisType)
 
 } // namespace blink
 
 #include "core/SVGElementTypeHelpers.h"
 
 #endif // SVGElement_h