Use Whitelist for LITERAL_HTML_ELEMENTS

lib/oga/xml/lexer.rb

@@ -87,7 +87,7 @@ module Oga
       ##
       # Names of HTML tags of which the content should be lexed as-is.
       #
-      LITERAL_HTML_ELEMENTS = NodeNameSet.new([HTML_SCRIPT, HTML_STYLE])
+      LITERAL_HTML_ELEMENTS = Whitelist.new([HTML_SCRIPT, HTML_STYLE])
 
       ##
       # @param [String|IO] data The data to lex. This can either be a String or

lib/oga/xml/text.rb

@@ -59,7 +59,7 @@ module Oga
         node = parent
 
         return node.is_a?(Element) && html? &&
-          Lexer::LITERAL_HTML_ELEMENTS.include?(node.name)
+          Lexer::LITERAL_HTML_ELEMENTS.allow?(node.name)
       end
     end # Text
   end # XML