Zine: support multiple sections in the ui

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageSingleItemGroup.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageSingleItemGroup.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageSingleItemGroup.java
new file mode 100644
index 0000000000000000000000000000000000000000..847a83d67f391eacfcc20db7423896509f392a30
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageSingleItemGroup.java
@@ -0,0 +1,23 @@
+// Copyright 2016 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.chrome.browser.ntp.cards;
+
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * A single item that represents itself as a group.
+ */
+public abstract class NewTabPageSingleItemGroup implements NewTabPageItemGroup, NewTabPageListItem {
+    private final List<NewTabPageListItem> mItems =
+            Collections.<NewTabPageListItem>singletonList(this);
+
+    public NewTabPageSingleItemGroup() {}
+
+    @Override
+    public List<NewTabPageListItem> getItems() {
+        return mItems;
+    }
+}