[Oilpan]: Move CSSFontSelectorClient to the oilpan heap using transition types.

Source/core/css/CSSFontSelector.cpp

 /*
  * Copyright (C) 2007, 2008, 2011 Apple Inc. All rights reserved.
  *           (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  *
  * 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 111 matching lines @@
 {
     clearDocument();
     FontCache::fontCache()->removeClient(this);
 }
 
 void CSSFontSelector::registerForInvalidationCallbacks(CSSFontSelectorClient* client)
 {
     m_clients.add(client);
 }
 
+#if !ENABLE(OILPAN)
 void CSSFontSelector::unregisterForInvalidationCallbacks(CSSFontSelectorClient* client)
 {
     m_clients.remove(client);
 }
+#endif
 
 void CSSFontSelector::dispatchInvalidationCallbacks()
 {
-    Vector<CSSFontSelectorClient*> clients;
+    WillBeHeapVector<RawPtrWillBeMember<CSSFontSelectorClient> > clients;
     copyToVector(m_clients, clients);
     for (size_t i = 0; i < clients.size(); ++i)
         clients[i]->fontsNeedUpdate(this);
 }
 
 void CSSFontSelector::fontLoaded()
 {
     dispatchInvalidationCallbacks();
 }
 
@@ skipping 69 matching lines @@
     m_fontLoader.loadPendingFonts();
 }
 
 void CSSFontSelector::updateGenericFontFamilySettings(Document& document)
 {
     ASSERT(document.settings());
     m_genericFontFamilySettings = document.settings()->genericFontFamilySettings();
 }
 
 }