Make collection caching code more consistent

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) 2003-2011, 2013, 2014 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 521 matching lines @@
     bool supportsSpatialNavigationFocus() const;
 
     void clearTabIndexExplicitlyIfNeeded();
     void setTabIndexExplicitly(short);
     // Subclasses may override this method to affect focusability. Unlike
     // supportsFocus, this method must be called on an up-to-date layout, so it
     // may use the renderer to reason about focusability. This method cannot be
     // moved to RenderObject because some focusable nodes don't have renderers,
     // e.g., HTMLOptionElement.
     virtual bool rendererIsFocusable() const;
-    PassRefPtrWillBeRawPtr<HTMLCollection> ensureCachedHTMLCollection(CollectionType);
-    HTMLCollection* cachedHTMLCollection(CollectionType);
 
     // classAttributeChanged() exists to share code between
     // parseAttribute (called via setAttribute()) and
     // svgAttributeChanged (called when element.className.baseValue is set)
     void classAttributeChanged(const AtomicString& newClassString);
 
     PassRefPtr<RenderStyle> originalStyleForRenderer();
 
     Node* insertAdjacent(const String& where, Node* newChild, ExceptionState&);
 
@@ skipping 299 matching lines @@
     static PassRefPtrWillBeRawPtr<T> create(const QualifiedName&, Document&)
 #define DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(T) \
     PassRefPtrWillBeRawPtr<T> T::create(const QualifiedName& tagName, Document& document) \
     { \
         return adoptRefWillBeNoop(new T(tagName, document)); \
     }
 
 } // namespace
 
 #endif