Pass implementation object to supplemental classes by reference

Source/modules/geolocation/GeolocationController.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 17 matching lines @@
 #include "modules/geolocation/GeolocationController.h"
 
 #include "core/inspector/InspectorController.h"
 #include "modules/geolocation/GeolocationClient.h"
 #include "modules/geolocation/GeolocationError.h"
 #include "modules/geolocation/GeolocationInspectorAgent.h"
 #include "modules/geolocation/GeolocationPosition.h"
 
 namespace WebCore {
 
-GeolocationController::GeolocationController(Page* page, GeolocationClient* client)
-    : PageLifecycleObserver(page)
+GeolocationController::GeolocationController(Page& page, GeolocationClient* client)
+    : PageLifecycleObserver(&page)
     , m_client(client)
     , m_hasClientForTest(false)
     , m_isClientUpdating(false)
     , m_inspectorAgent()
 {
     OwnPtr<GeolocationInspectorAgent> geolocationAgent(GeolocationInspectorAgent::create(this));
     m_inspectorAgent = geolocationAgent.get();
-    page->inspectorController().registerModuleAgent(geolocationAgent.release());
+    page.inspectorController().registerModuleAgent(geolocationAgent.release());
 }
 
 void GeolocationController::startUpdatingIfNeeded()
 {
     if (m_isClientUpdating)
         return;
     m_isClientUpdating = true;
     m_client->startUpdating();
 }
 
 void GeolocationController::stopUpdatingIfNeeded()
 {
     if (!m_isClientUpdating)
         return;
     m_isClientUpdating = false;
     m_client->stopUpdating();
 }
 
 GeolocationController::~GeolocationController()
 {
     ASSERT(m_observers.isEmpty());
 
     if (m_client)
         m_client->geolocationDestroyed();
 }
 
-PassOwnPtr<GeolocationController> GeolocationController::create(Page* page, GeolocationClient* client)
+PassOwnPtr<GeolocationController> GeolocationController::create(Page& page, GeolocationClient* client)
 {
     return adoptPtr(new GeolocationController(page, client));
 }
 
 void GeolocationController::addObserver(Geolocation* observer, bool enableHighAccuracy)
 {
     // This may be called multiple times with the same observer, though removeObserver()
     // is called only once with each.
     bool wasEmpty = m_observers.isEmpty();
     m_observers.add(observer);
@@ skipping 84 matching lines @@
         startUpdatingIfNeeded();
     else
         stopUpdatingIfNeeded();
 }
 
 const char* GeolocationController::supplementName()
 {
     return "GeolocationController";
 }
 
-void provideGeolocationTo(Page* page, GeolocationClient* client)
+void provideGeolocationTo(Page& page, GeolocationClient* client)
 {
     Supplement<Page>::provideTo(page, GeolocationController::supplementName(), GeolocationController::create(page, client));
 }
 
 } // namespace WebCore