Introduce "navigation target classification" for spatial navigation

Source/core/svg/SVGElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
  *
  * 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
@@ skipping 932 matching lines @@
 
     RenderStyle* parentStyle = 0;
     if (Element* parent = parentOrShadowHostElement()) {
         if (RenderObject* renderer = parent->renderer())
             parentStyle = renderer->style();
     }
 
     return svgRareData()->overrideComputedStyle(this, parentStyle);
 }
 
-bool SVGElement::hasFocusEventListeners() const
-{
-    return hasEventListeners(EventTypeNames::focusin) || hasEventListeners(EventTypeNames::focusout)
-        || hasEventListeners(EventTypeNames::focus) || hasEventListeners(EventTypeNames::blur);
-}
-
 void SVGElement::markForLayoutAndParentResourceInvalidation(RenderObject* renderer)
 {
     ASSERT(renderer);
     RenderSVGResourceContainer::markForLayoutAndParentResourceInvalidation(renderer, true);
 }
 
 void SVGElement::invalidateInstances()
 {
     if (!inDocument())
         return;
@@ skipping 215 matching lines @@
     Element::trace(visitor);
 }
 
 const AtomicString& SVGElement::eventParameterName()
 {
     DEFINE_STATIC_LOCAL(const AtomicString, evtString, ("evt", AtomicString::ConstructFromLiteral));
     return evtString;
 }
 
 } // namespace blink