Clean up static_cast<SVGFooElement*> by using toSVGFoo()

Source/core/css/CSSCursorImageValue.cpp

 /*
  * Copyright (C) 2006 Rob Buis <buis@kde.org>
  *           (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 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 24 matching lines @@
 #include "core/svg/SVGURIReference.h"
 #include "wtf/MathExtras.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 static inline SVGCursorElement* resourceReferencedByCursorElement(const String& url, Document& document)
 {
     Element* element = SVGURIReference::targetElementFromIRIString(url, document);
     if (element && element->hasTagName(SVGNames::cursorTag))
-        return static_cast<SVGCursorElement*>(element);
+        return toSVGCursorElement(element);
 
     return 0;
 }
 
 CSSCursorImageValue::CSSCursorImageValue(PassRefPtr<CSSValue> imageValue, bool hasHotSpot, const IntPoint& hotSpot)
     : CSSValue(CursorImageClass)
     , m_imageValue(imageValue)
     , m_hasHotSpot(hasHotSpot)
     , m_hotSpot(hotSpot)
     , m_accessedImage(false)
@@ skipping 133 matching lines @@
     m_referencedElements.remove(element);
 }
 
 bool CSSCursorImageValue::equals(const CSSCursorImageValue& other) const
 {
     return m_hasHotSpot ? other.m_hasHotSpot && m_hotSpot == other.m_hotSpot : !other.m_hasHotSpot
         && compareCSSValuePtr(m_imageValue, other.m_imageValue);
 }
 
 } // namespace WebCore