Start using computed style instead of default tag actions.

src/com/dom_distiller/client/sax/ContentHandler.java

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package com.dom_distiller.client.sax;
 
+import com.google.gwt.dom.client.Element;
+
 public interface ContentHandler {
     public void endDocument();
     public void ignorableWhitespace(char[] ch, int start, int length);
     public void startDocument();
-    public void startElement(String uri, String localName, String qName, Attributes atts);
-    public void endElement(String uri, String localName, String qName);
+    public void startElement(Element element, Attributes atts);
+    public void endElement(Element element);
     public void characters(char[] ch, int start, int length);
 }