Have Frame::animation() return a reference

Source/core/frame/Frame.h

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999-2001 Lars Knoll <knoll@kde.org>
  *                     1999-2001 Antti Koivisto <koivisto@kde.org>
  *                     2000-2001 Simon Hausmann <hausmann@kde.org>
  *                     2000-2001 Dirk Mueller <mueller@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
@@ skipping 83 matching lines @@
         DOMWindow* domWindow() const;
         Document* document() const;
         FrameView* view() const;
 
         Editor& editor() const;
         EventHandler* eventHandler() const;
         FrameLoader* loader() const;
         NavigationScheduler* navigationScheduler() const;
         FrameSelection& selection() const;
         FrameTree* tree() const;
-        AnimationController* animation() const;
+        AnimationController& animation() const;
         InputMethodController& inputMethodController() const;
         FetchContext& fetchContext() const { return loader()->fetchContext(); }
         ScriptController* script();
         SpellChecker& spellChecker() const;
 
         RenderView* contentRenderer() const; // Root of the render tree for the document contained in this frame.
         RenderPart* ownerRenderer() const; // Renderer for the element that contains this frame.
 
         void dispatchVisibilityStateChangeEvent();
 
@@ skipping 120 matching lines @@
     inline Editor& Frame::editor() const
     {
         return *m_editor;
     }
 
     inline SpellChecker& Frame::spellChecker() const
     {
         return *m_spellChecker;
     }
 
-    inline AnimationController* Frame::animation() const
+    inline AnimationController& Frame::animation() const
     {
-        return m_animationController.get();
+        return *m_animationController;
     }
 
     inline InputMethodController& Frame::inputMethodController() const
     {
         return *m_inputMethodController;
     }
 
     inline HTMLFrameOwnerElement* Frame::ownerElement() const
     {
         return m_ownerElement;
@@ skipping 20 matching lines @@
     }
 
     inline EventHandler* Frame::eventHandler() const
     {
         return m_eventHandler.get();
     }
 
 } // namespace WebCore
 
 #endif // Frame_h