Pass implementation object to supplemental classes by reference

Source/modules/notifications/WorkerGlobalScopeNotifications.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009, 2011 Google 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
@@ skipping 18 matching lines @@
 #include "modules/notifications/WorkerGlobalScopeNotifications.h"
 
 #if ENABLE(LEGACY_NOTIFICATIONS)
 
 #include "core/workers/WorkerGlobalScope.h"
 #include "core/workers/WorkerThread.h"
 #include "modules/notifications/NotificationCenter.h"
 
 namespace WebCore {
 
-WorkerGlobalScopeNotifications::WorkerGlobalScopeNotifications(WorkerGlobalScope* context)
+WorkerGlobalScopeNotifications::WorkerGlobalScopeNotifications(WorkerGlobalScope& context)
     : m_context(context)
 {
 }
 
 WorkerGlobalScopeNotifications::~WorkerGlobalScopeNotifications()
 {
 }
 
 const char* WorkerGlobalScopeNotifications::supplementName()
 {
     return "WorkerGlobalScopeNotifications";
 }
 
-WorkerGlobalScopeNotifications* WorkerGlobalScopeNotifications::from(WorkerGlobalScope* context)
+WorkerGlobalScopeNotifications& WorkerGlobalScopeNotifications::from(WorkerGlobalScope& context)
 {
     WorkerGlobalScopeNotifications* supplement = static_cast<WorkerGlobalScopeNotifications*>(WorkerSupplement::from(context, supplementName()));
     if (!supplement) {
         supplement = new WorkerGlobalScopeNotifications(context);
         WorkerSupplement::provideTo(context, supplementName(), adoptPtr(supplement));
     }
-    return supplement;
+    return *supplement;
 }
 
-NotificationCenter* WorkerGlobalScopeNotifications::webkitNotifications(WorkerGlobalScope* context)
+NotificationCenter* WorkerGlobalScopeNotifications::webkitNotifications(WorkerGlobalScope& context)
 {
-    return WorkerGlobalScopeNotifications::from(context)->webkitNotifications();
+    return WorkerGlobalScopeNotifications::from(context).webkitNotifications();
 }
 
 NotificationCenter* WorkerGlobalScopeNotifications::webkitNotifications()
 {
     if (!m_notificationCenter)
-        m_notificationCenter = NotificationCenter::create(m_context, m_context->thread()->getNotificationClient());
+        m_notificationCenter = NotificationCenter::create(&m_context, m_context.thread()->getNotificationClient());
     return m_notificationCenter.get();
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(LEGACY_NOTIFICATIONS)