Pass implementation object to supplemental classes by reference

Source/core/svg/SVGTests.h

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2010 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 14 matching lines @@
 #include "wtf/HashSet.h"
 
 namespace WebCore {
 
 class Attribute;
 class QualifiedName;
 class SVGElement;
 
 class SVGTests {
 public:
-    static SVGStringListTearOff* requiredFeatures(SVGTests* object) { return object->m_requiredFeatures->tearOff(); }
-    static SVGStringListTearOff* requiredExtensions(SVGTests* object) { return object->m_requiredExtensions->tearOff(); }
-    static SVGStringListTearOff* systemLanguage(SVGTests* object) { return object->m_systemLanguage->tearOff(); }
+    static SVGStringListTearOff* requiredFeatures(SVGTests& object) { return object.m_requiredFeatures->tearOff(); }
+    static SVGStringListTearOff* requiredExtensions(SVGTests& object) { return object.m_requiredExtensions->tearOff(); }
+    static SVGStringListTearOff* systemLanguage(SVGTests& object) { return object.m_systemLanguage->tearOff(); }
 
-    static bool hasExtension(SVGTests*, const String&);
+    static bool hasExtension(SVGTests&, const String&);
     bool isValid() const;
 
     bool parseAttribute(const QualifiedName&, const AtomicString&);
     bool isKnownAttribute(const QualifiedName&);
 
     void addSupportedAttributes(HashSet<QualifiedName>&);
 
 protected:
     SVGTests(SVGElement* contextElement);
 
 private:
     RefPtr<SVGStaticStringList> m_requiredFeatures;
     RefPtr<SVGStaticStringList> m_requiredExtensions;
     RefPtr<SVGStaticStringList> m_systemLanguage;
 };
 
 } // namespace WebCore
 
 #endif // SVGTests_h