Zine: support multiple sections in the ui

chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/AboveTheFoldListItem.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/AboveTheFoldListItem.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/AboveTheFoldListItem.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/AboveTheFoldListItem.java
index 3e1efb8db88258451ec481345e9f83b1f459e136..98604a1dc81fb341426ad1a7c42619778c628af8 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/AboveTheFoldListItem.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/AboveTheFoldListItem.java
@@ -13,9 +13,9 @@ package org.chromium.chrome.browser.ntp.cards;
  * Other elements coming after it and initially off-screen are just added to the RecyclerView after
  * that.
  */
-class AboveTheFoldListItem implements NewTabPageListItem {
+class AboveTheFoldListItem extends SingleItemGroup {
     @Override
     public int getType() {
         return NewTabPageListItem.VIEW_TYPE_ABOVE_THE_FOLD;
     }
-}
+}