Resolve URL/target reference at a single point in SVGUseElement

third_party/WebKit/Source/core/svg/SVGURIReference.h

 /*
  * Copyright (C) 2004, 2005, 2008, 2009 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 28 matching lines @@
     // Use this for accesses to 'href' or 'xlink:href' (in that order) for
     // elements where both are allowed and don't necessarily inherit from
     // SVGURIReference.
     static const AtomicString& legacyHrefString(const SVGElement&);
 
     // Like above, but for elements that inherit from SVGURIReference. Resolves
     // against the base URL of the passed Document.
     KURL legacyHrefURL(const Document&) const;
 
     static AtomicString fragmentIdentifierFromIRIString(const String&, const TreeScope&);
-    static Element* targetElementFromIRIString(const String&, const TreeScope&, AtomicString* = 0, Document* = 0);
+    static Element* targetElementFromIRIString(const String&, const TreeScope&, AtomicString* = nullptr);
 
     static inline bool isExternalURIReference(const String& uri, const Document& document)
     {
         // Fragment-only URIs are always internal if the baseURL is same as the document URL.
         // This is common case, so check that first to avoid resolving URL (which is relatively expensive). See crbug.com/557979
         if (document.baseURL() == document.url() && uri.startsWith('#'))
             return false;
 
         // If the URI matches our documents URL, we're dealing with a local reference.
         KURL url = document.completeURL(uri);
@@ skipping 10 matching lines @@
 protected:
     explicit SVGURIReference(SVGElement*);
 
 private:
     Member<SVGAnimatedHref> m_href;
 };
 
 } // namespace blink
 
 #endif // SVGURIReference_h