Fix for keeping lists structure

javatests/org/chromium/distiller/webdocument/TestWebDocumentBuilder.java

 // Copyright 2015 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 org.chromium.distiller.webdocument;
 
 import com.google.gwt.dom.client.Document;
 import com.google.gwt.dom.client.Element;
 import org.chromium.distiller.TestUtil;
 
@@ skipping 38 matching lines @@
     public WebImage addLeadImage() {
         Element image = TestUtil.createImage();
         image.setAttribute("width", "600");
         image.setAttribute("height", "400");
         Document.get().getBody().appendChild(image);
         WebImage wi = new WebImage(image, 600, 400, "http://www.example.com/lead.bmp");
         document.addEmbed(wi);
         return wi;
     }
 
+    public WebTag addTagStart() {
+        WebTag webTag = new WebTag("OL", WebTag.TagType.START);
+        document.addTag(webTag);
+        return webTag;
+    }
+
+    public WebTag addTagEnd() {
+        WebTag webTag = new WebTag("OL", WebTag.TagType.END);
+        document.addTag(webTag);
+        return webTag;
+    }
+
     public WebDocument build() {
         return document;
     }
 }