Manage RequestAnimationFrameCallbacks with OwnPtrs instead of RefPtrs

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 4749 matching lines @@
 {
     if (!m_scriptedAnimationController) {
         m_scriptedAnimationController = ScriptedAnimationController::create(this);
         // We need to make sure that we don't start up the animation controller on a background tab, for example.
         if (!page())
             m_scriptedAnimationController->suspend();
     }
     return *m_scriptedAnimationController;
 }
 
-int Document::requestAnimationFrame(PassRefPtr<RequestAnimationFrameCallback> callback)
+int Document::requestAnimationFrame(PassOwnPtr<RequestAnimationFrameCallback> callback)
 {
     return ensureScriptedAnimationController().registerCallback(callback);
 }
 
 void Document::cancelAnimationFrame(int id)
 {
     if (!m_scriptedAnimationController)
         return;
     m_scriptedAnimationController->cancelCallback(id);
 }
@@ skipping 436 matching lines @@
 }
 
 FastTextAutosizer* Document::fastTextAutosizer()
 {
     if (!m_fastTextAutosizer && RuntimeEnabledFeatures::fastTextAutosizingEnabled())
         m_fastTextAutosizer = FastTextAutosizer::create(this);
     return m_fastTextAutosizer.get();
 }
 
 } // namespace WebCore