Pass implementation object to supplemental classes by reference

Source/modules/geolocation/NavigatorGeolocation.cpp

 /*
  *  Copyright (C) 2000 Harri Porten (porten@kde.org)
  *  Copyright (c) 2000 Daniel Molkentin (molkentin@kde.org)
  *  Copyright (c) 2000 Stefan Schimanski (schimmi@kde.org)
  *  Copyright (C) 2003, 2004, 2005, 2006 Apple Computer, Inc.
  *  Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public
  *  License as published by the Free Software Foundation; either
@@ skipping 26 matching lines @@
 
 NavigatorGeolocation::~NavigatorGeolocation()
 {
 }
 
 const char* NavigatorGeolocation::supplementName()
 {
     return "NavigatorGeolocation";
 }
 
-NavigatorGeolocation* NavigatorGeolocation::from(Navigator* navigator)
+NavigatorGeolocation& NavigatorGeolocation::from(Navigator& navigator)
 {
     NavigatorGeolocation* supplement = static_cast<NavigatorGeolocation*>(Supplement<Navigator>::from(navigator, supplementName()));
     if (!supplement) {
-        supplement = new NavigatorGeolocation(navigator->frame());
+        supplement = new NavigatorGeolocation(navigator.frame());
         provideTo(navigator, supplementName(), adoptPtr(supplement));
     }
-    return supplement;
+    return *supplement;
 }
 
-Geolocation* NavigatorGeolocation::geolocation(Navigator* navigator)
+Geolocation* NavigatorGeolocation::geolocation(Navigator& navigator)
 {
-    return NavigatorGeolocation::from(navigator)->geolocation();
+    return NavigatorGeolocation::from(navigator).geolocation();
 }
 
 Geolocation* NavigatorGeolocation::geolocation() const
 {
     if (!m_geolocation && frame())
         m_geolocation = Geolocation::create(frame()->document());
     return m_geolocation.get();
 }
 
 } // namespace WebCore