Make collection caching code more consistent

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 2900 matching lines @@
     if (!document().isHTMLDocument())
         return;
 
     if (!oldId.isEmpty())
         toHTMLDocument(document()).removeExtraNamedItem(oldId);
 
     if (!newId.isEmpty())
         toHTMLDocument(document()).addExtraNamedItem(newId);
 }
 
-PassRefPtrWillBeRawPtr<HTMLCollection> Element::ensureCachedHTMLCollection(CollectionType type)
-{
-    if (HTMLCollection* collection = cachedHTMLCollection(type))
-        return collection;
-
-    if (type == TableRows) {
-        ASSERT(isHTMLTableElement(this));
-        return ensureRareData().ensureNodeLists().addCache<HTMLTableRowsCollection>(*this, type);
-    } else if (type == SelectOptions) {
-        ASSERT(isHTMLSelectElement(this));
-        return ensureRareData().ensureNodeLists().addCache<HTMLOptionsCollection>(*this, type);
-    } else if (type == FormControls) {
-        ASSERT(isHTMLFormElement(this) || isHTMLFieldSetElement(this));
-        return ensureRareData().ensureNodeLists().addCache<HTMLFormControlsCollection>(*this, type);
-    }
-    return ensureRareData().ensureNodeLists().addCache<HTMLCollection>(*this, type);
-}
-
 void Element::scheduleSVGFilterLayerUpdateHack()
 {
     document().scheduleSVGFilterLayerUpdateHack(*this);
 }
 
-HTMLCollection* Element::cachedHTMLCollection(CollectionType type)
-{
-    return hasRareData() && rareData()->nodeLists() ? rareData()->nodeLists()->cached<HTMLCollection>(type) : 0;
-}
-
 IntSize Element::savedLayerScrollOffset() const
 {
     return hasRareData() ? elementRareData()->savedLayerScrollOffset() : IntSize();
 }
 
 void Element::setSavedLayerScrollOffset(const IntSize& size)
 {
     if (size.isZero() && !hasRareData())
         return;
     ensureElementRareData().setSavedLayerScrollOffset(size);
@@ skipping 347 matching lines @@
 {
 #if ENABLE(OILPAN)
     if (hasRareData())
         visitor->trace(elementRareData());
     visitor->trace(m_elementData);
 #endif
     ContainerNode::trace(visitor);
 }
 
 } // namespace blink