Reviewed by eseidel.

    Reviewed by eseidel.

        Fixes http://bugzilla.opendarwin.org/show_bug.cgi?id=10876
        containsItemForURLUnicode uses matchLetter instead of
        matchUnicodeLetter

        Small fixes for _WebCoreHistoryProvider.

        * History/WebHistory.m: Consistently use BUFFER_SIZE #define
        (-[_WebCoreHistoryProvider containsItemForURLLatin1:length:]):
        (-[_WebCoreHistoryProvider containsItemForURLUnicode:length:]):
        Replace incorrect call to matchLetter to matchUnicodeLetter

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@16375 268f45cc-cd09-0410-ab3c-d52691b4dbfc