Merge appendChildToContainer into ContainerNode

Source/core/dom/ContainerNodeAlgorithms.h

 /*
  * Copyright (C) 2007 Apple Inc. All rights reserved.
  *           (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 48 matching lines @@
             tail = 0;
 
         if (n->hasChildren())
             Private::addChildNodesToDeletionQueue<GenericNode, GenericNodeContainer>(head, tail, static_cast<GenericNodeContainer&>(*n));
 
         delete n;
     }
 }
 #endif
 
-template<class GenericNode, class GenericNodeContainer>
-inline void appendChildToContainer(GenericNode& child, GenericNodeContainer& container)
-{
-    child.setParentOrShadowHostNode(&container);
-
-    GenericNode* lastChild = container.lastChild();
-    if (lastChild) {
-        child.setPreviousSibling(lastChild);
-        lastChild->setNextSibling(&child);
-    } else {
-        container.setFirstChild(&child);
-    }
-
-    container.setLastChild(&child);
-}
-
 // Helper methods for removeDetachedChildrenInContainer, hidden from WebCore namespace
 namespace Private {
 
     template<class GenericNode, class GenericNodeContainer, bool dispatchRemovalNotification>
     struct NodeRemovalDispatcher {
         static void dispatch(GenericNode&, GenericNodeContainer&)
         {
             // no-op, by default
         }
     };
@@ skipping 52 matching lines @@
         }
 
         container.setLastChild(0);
     }
 
 } // namespace Private
 
 } // namespace WebCore
 
 #endif // ContainerNodeAlgorithms_h