Pass implementation object to supplemental classes by reference

Source/modules/geolocation/NavigatorGeolocation.cpp

Index: Source/modules/geolocation/NavigatorGeolocation.cpp
diff --git a/Source/modules/geolocation/NavigatorGeolocation.cpp b/Source/modules/geolocation/NavigatorGeolocation.cpp
index 72429741aa9aa2e3a94e1fd45fb6b6a5bda0a225..cdb90599ab3fce6433f3419d31b2a9eafb24d635 100644
--- a/Source/modules/geolocation/NavigatorGeolocation.cpp
+++ b/Source/modules/geolocation/NavigatorGeolocation.cpp
@@ -44,19 +44,19 @@ 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