Discard hidden articles when using fast path

javatests/org/chromium/distiller/TestUtil.java

Index: javatests/org/chromium/distiller/TestUtil.java
diff --git a/javatests/org/chromium/distiller/TestUtil.java b/javatests/org/chromium/distiller/TestUtil.java
index 6db5ad1ae2f7f3225168e0c8ca8b97d2cee18fa7..107eaa976365ed1e532a146f8446c53dd5083afc 100644
--- a/javatests/org/chromium/distiller/TestUtil.java
+++ b/javatests/org/chromium/distiller/TestUtil.java
@@ -13,6 +13,7 @@ import com.google.gwt.dom.client.ImageElement;
 import com.google.gwt.dom.client.MetaElement;
 import com.google.gwt.dom.client.Text;
 import com.google.gwt.dom.client.TitleElement;
+import com.google.gwt.dom.client.NodeList;
 import com.google.gwt.user.client.Random;
 import com.google.gwt.user.client.Window;
 
@@ -161,6 +162,14 @@ public class TestUtil {
         return originalHtml.replaceAll(" dir=\\\"(ltr|rtl|inherit|auto)\\\"","");
     }
 
+    public static List<Element> nodeListToList(NodeList<Element> nodeList) {
+        List<Element> elements = new ArrayList<>();
+        for (int i = 0; i < nodeList.getLength(); i++) {
+            elements.add(nodeList.getItem(i));
+        }
+        return elements;
+    }
+
     /**
      * Randomly shuffle the list in-place.
      */