Have getElementsByClassName() / getElementsByTagName*() return an HTMLCollection

Source/core/dom/Node.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * 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 29 matching lines @@
 #include "wtf/Forward.h"
 #include "wtf/ListHashSet.h"
 #include "wtf/text/AtomicString.h"
 
 // This needs to be here because Document.h also depends on it.
 #define DUMP_NODE_STATISTICS 0
 
 namespace WebCore {
 
 class Attribute;
-class ClassNodeList;
+class ClassCollection;
 class ContainerNode;
 class DOMSettableTokenList;
 class Document;
 class Element;
 class Event;
 class EventDispatchMediator;
 class EventListener;
 class ExceptionState;
 class FloatPoint;
 class Frame;
@@ skipping 12 matching lines @@
 class PlatformMouseEvent;
 class PlatformWheelEvent;
 class QualifiedName;
 class RadioNodeList;
 class RegisteredEventListener;
 class RenderBox;
 class RenderBoxModelObject;
 class RenderObject;
 class RenderStyle;
 class ShadowRoot;
-class TagNodeList;
+class TagCollection;
 class Text;
 class TouchEvent;
 
 const int nodeStyleChangeShift = 14;
 
 enum StyleChangeType {
     NoStyleChange = 0,
     LocalStyleChange = 1 << nodeStyleChangeShift,
     SubtreeStyleChange = 2 << nodeStyleChangeShift,
     NeedsReattachStyleChange = 3 << nodeStyleChangeShift,
@@ skipping 808 matching lines @@
 
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const WebCore::Node*);
 void showNodePath(const WebCore::Node*);
 #endif
 
 #endif