Add new NTP layout with snippet cards and hide it behind a flag

chrome/android/java/src/org/chromium/chrome/browser/ntp/v2/AboveTheFoldListItem.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/v2/AboveTheFoldListItem.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/v2/AboveTheFoldListItem.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/v2/AboveTheFoldListItem.java
new file mode 100644
index 0000000000000000000000000000000000000000..72ee33d8225b27a7fc2f8aa66558bacf63d1fe7c
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/v2/AboveTheFoldListItem.java
@@ -0,0 +1,29 @@
+// 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.v2;
+
+import org.chromium.chrome.browser.ntp.NewTabPageLayout;
+import org.chromium.chrome.browser.ntp.NewTabPageViewHolder;
+
+/** Item in the RecyclerView that will hold the above the fold contents for the NTP */

[newt (away), 2016/03/30 19:03:50]

This would be a great place to explain what in the world "above the fold
contents" are. Also, I'd avoid putting class header comments on a single line.
The class header comment is important; make it stand out a bit :)

    /**
     * Amazing class.
     */

[dgn, 2016/03/31 00:46:45]

Done.

+class AboveTheFoldListItem implements NewTabPageListItem {
+    public static class ViewHolder extends NewTabPageViewHolder {
+        public ViewHolder(NewTabPageLayout view) {
+            super(view);
+        }
+
+        @Override
+        public void onBindViewHolder(NewTabPageListItem snippetItem) {
+            // nothing to do
+        }
+    }
+
+    public AboveTheFoldListItem() {}

[newt (away), 2016/03/30 19:03:50]

not needed

[dgn, 2016/03/31 00:46:45]

Done.

+
+    @Override
+    public int getType() {
+        return NewTabPageListItem.VIEW_TYPE_ABOVE_THE_FOLD;
+    }
+}