Web Animations: Introduce ActiveAnimations and AnimationStack

Source/core/dom/Element.h

 /*
  * 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)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2013 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 19 matching lines @@
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/dom/Attribute.h"
 #include "core/dom/Document.h"
 #include "core/dom/SpaceSplitString.h"
 #include "core/html/CollectionType.h"
 #include "core/platform/ScrollTypes.h"
 #include "core/rendering/RegionOversetState.h"
 
 namespace WebCore {
 
-class Animation;
+class ActiveAnimations;
 class Attr;
 class Attribute;
 class ClientRect;
 class ClientRectList;
 class DOMStringMap;
 class DOMTokenList;
 class Element;
 class ElementRareData;
 class ElementShadow;
 class InputMethodContext;
@@ skipping 564 matching lines @@
     const AtomicString& webkitRegionOverset() const;
     Vector<RefPtr<Range> > webkitGetRegionFlowRanges() const;
 
     bool hasID() const;
     bool hasClass() const;
     const SpaceSplitString& classNames() const;
 
     IntSize savedLayerScrollOffset() const;
     void setSavedLayerScrollOffset(const IntSize&);
 
-    void addActiveAnimation(Animation*);
-    void removeActiveAnimation(Animation*);
+    ActiveAnimations* activeAnimations() const;
+    ActiveAnimations* ensureActiveAnimations();
     bool hasActiveAnimations() const;
-    Vector<Animation*>* activeAnimations() const;
 
     InputMethodContext* getInputContext();
 
 protected:
     Element(const QualifiedName& tagName, Document* document, ConstructionType type)
         : ContainerNode(document, type)
         , m_tagName(tagName)
     {
         ScriptWrappable::init(this);
     }
@@ skipping 421 matching lines @@
 
 inline const Attribute* ElementData::attributeItem(unsigned index) const
 {
     RELEASE_ASSERT(index < length());
     return attributeBase() + index;
 }
 
 } // namespace
 
 #endif