Make Element::ensureActiveAnimations() return a reference

Source/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 351 matching lines @@
     return rareData.attributeMap();
 }
 
 ActiveAnimations* Element::activeAnimations() const
 {
     if (hasRareData())
         return elementRareData()->activeAnimations();
     return 0;
 }
 
-ActiveAnimations* Element::ensureActiveAnimations()
+ActiveAnimations& Element::ensureActiveAnimations()
 {
     ElementRareData& rareData = ensureElementRareData();
     if (!rareData.activeAnimations())
         rareData.setActiveAnimations(adoptPtr(new ActiveAnimations()));
-    return rareData.activeAnimations();
+    return *rareData.activeAnimations();
 }
 
 bool Element::hasActiveAnimations() const
 {
     if (!hasRareData())
         return false;
 
     ActiveAnimations* activeAnimations = elementRareData()->activeAnimations();
     return activeAnimations && !activeAnimations->isEmpty();
 }
@@ skipping 3153 matching lines @@
     // Before doing so, we need to resolve issues in HTMLSelectElement::recalcListItems
     // and RenderMenuList::setText. See also https://bugs.webkit.org/show_bug.cgi?id=88405
     if (hasTagName(optionTag) || hasTagName(optgroupTag))
         return false;
     if (FullscreenElementStack::isActiveFullScreenElement(this))
         return false;
     return true;
 }
 
 } // namespace WebCore