Pass implementation object to supplemental classes by reference

Source/modules/quota/NavigatorStorageQuota.cpp

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 33 matching lines @@
 
 NavigatorStorageQuota::~NavigatorStorageQuota()
 {
 }
 
 const char* NavigatorStorageQuota::supplementName()
 {
     return "NavigatorStorageQuota";
 }
 
-NavigatorStorageQuota* NavigatorStorageQuota::from(Navigator* navigator)
+NavigatorStorageQuota& NavigatorStorageQuota::from(Navigator& navigator)
 {
     NavigatorStorageQuota* supplement = static_cast<NavigatorStorageQuota*>(Supplement<Navigator>::from(navigator, supplementName()));
     if (!supplement) {
-        supplement = new NavigatorStorageQuota(navigator->frame());
+        supplement = new NavigatorStorageQuota(navigator.frame());
         provideTo(navigator, supplementName(), adoptPtr(supplement));
     }
-    return supplement;
+    return *supplement;
 }
 
-StorageQuota* NavigatorStorageQuota::storageQuota(Navigator* navigator)
+StorageQuota* NavigatorStorageQuota::storageQuota(Navigator& navigator)
 {
-    return NavigatorStorageQuota::from(navigator)->storageQuota();
+    return NavigatorStorageQuota::from(navigator).storageQuota();
 }
 
-DeprecatedStorageQuota* NavigatorStorageQuota::webkitTemporaryStorage(Navigator* navigator)
+DeprecatedStorageQuota* NavigatorStorageQuota::webkitTemporaryStorage(Navigator& navigator)
 {
-    return NavigatorStorageQuota::from(navigator)->webkitTemporaryStorage();
+    return NavigatorStorageQuota::from(navigator).webkitTemporaryStorage();
 }
 
-DeprecatedStorageQuota* NavigatorStorageQuota::webkitPersistentStorage(Navigator* navigator)
+DeprecatedStorageQuota* NavigatorStorageQuota::webkitPersistentStorage(Navigator& navigator)
 {
-    return NavigatorStorageQuota::from(navigator)->webkitPersistentStorage();
+    return NavigatorStorageQuota::from(navigator).webkitPersistentStorage();
 }
 
 StorageQuota* NavigatorStorageQuota::storageQuota() const
 {
     if (!m_storageQuota && frame())
         m_storageQuota = StorageQuota::create();
     return m_storageQuota.get();
 }
 
 DeprecatedStorageQuota* NavigatorStorageQuota::webkitTemporaryStorage() const
 {
     if (!m_temporaryStorage && frame())
         m_temporaryStorage = DeprecatedStorageQuota::create(DeprecatedStorageQuota::Temporary);
     return m_temporaryStorage.get();
 }
 
 DeprecatedStorageQuota* NavigatorStorageQuota::webkitPersistentStorage() const
 {
     if (!m_persistentStorage && frame())
         m_persistentStorage = DeprecatedStorageQuota::create(DeprecatedStorageQuota::Persistent);
     return m_persistentStorage.get();
 }
 
 } // namespace WebCore