Discard hidden articles when using fast path

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

Index: javatests/org/chromium/distiller/webdocument/DomConverterTest.java
diff --git a/javatests/org/chromium/distiller/webdocument/DomConverterTest.java b/javatests/org/chromium/distiller/webdocument/DomConverterTest.java
index 6d813cc87734f5d0e3b622a711a2c9fb72869e42..1961c586628f480b7d16f3024919bbc7091fec6d 100644
--- a/javatests/org/chromium/distiller/webdocument/DomConverterTest.java
+++ b/javatests/org/chromium/distiller/webdocument/DomConverterTest.java
@@ -134,6 +134,7 @@ public class DomConverterTest extends DomDistillerJsTestCase {
     public void testElementOrder() {
         Element container = Document.get().createDivElement();
         container.setInnerHTML("Text content <img src=\"http://example.com/1.jpg\"> more content");
+        mBody.appendChild(container);
 
         WebDocumentBuilder builder = new WebDocumentBuilder();
         DomConverter converter = new DomConverter(builder);
@@ -156,6 +157,7 @@ public class DomConverterTest extends DomDistillerJsTestCase {
     public void testList() throws Throwable {
         Element container = Document.get().createDivElement();
         container.setInnerHTML("<ol><li>some text1</li><li>some text2</li></ol>");
+        mBody.appendChild(container);
 
         WebDocumentBuilder builder = new WebDocumentBuilder();
         DomConverter converter = new DomConverter(builder);