Reviewed by John Sullivan.

    Reviewed by John Sullivan.

        <rdar://problem/4514529> Add a list type parameter and a return value to _increaseSelectionListLevel

        * WebView/WebHTMLView.m:
        (-[WebHTMLView _increaseSelectionListLevel]):
        - Now returns DOMNode*

        (-[WebHTMLView _increaseSelectionListLevelOrdered]):
        (-[WebHTMLView _increaseSelectionListLevelUnordered]):
        - Added.  These also return DOMNode*

        * WebView/WebHTMLViewPrivate.h:
        - Updated as above

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@14614 268f45cc-cd09-0410-ab3c-d52691b4dbfc