Drop NodeTraversal::nextSkippingChildren() overload taking a ContainerNode
https://bugs.webkit.org/show_bug.cgi?id=136764

Reviewed by Darin Adler.

Drop NodeTraversal::nextSkippingChildren() overload taking a
ContainerNode argument. This one does not bring any performance
improvement because nextSibling() is defined on Node and
nextAncestorSibling() takes a Node in argument.

Also remove the overload in ElementTraversal as it no longer makes
sense after this change.

No new tests, no behavior change.

* dom/ElementTraversal.h:
(WebCore::Traversal<ElementType>::nextSkippingChildren):
(WebCore::Traversal<ElementType>::nextSkippingChildrenTemplate): Deleted.
* dom/NodeTraversal.h:
(WebCore::NodeTraversal::nextSkippingChildren):
(WebCore::NodeTraversal::next):
(WebCore::NodeTraversal::traverseNextSkippingChildrenTemplate): Deleted.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@173607 268f45cc-cd09-0410-ab3c-d52691b4dbfc