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

chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsAdapter.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsAdapter.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsAdapter.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsAdapter.java
deleted file mode 100644
index fd481a4cecc7d4808a75c1839117dc98949d7391..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsAdapter.java
+++ /dev/null
@@ -1,71 +0,0 @@
-// Copyright 2015 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.snippets;
-
-import android.support.v7.widget.RecyclerView.Adapter;
-import android.view.ViewGroup;
-
-import org.chromium.chrome.browser.ntp.snippets.SnippetsManager.SnippetListItem;
-
-import java.util.Collections;
-import java.util.List;
-
-/**
- * A class that represents the adapter backing the snippets RecyclerView.
- */
-class SnippetsAdapter extends Adapter<SnippetListItemViewHolder> {
-    private List<SnippetListItem> mSnippetListItems;
-    private final SnippetsManager mManager;
-
-    /**
-     * Constructs a SnippetsAdapter object that backs the Snippets RecyclerView on the NTP
-     *
-     * @param snippetsManager SnippetsManager object used to open an article
-     */
-    public SnippetsAdapter(SnippetsManager snippetsManager) {
-        mManager = snippetsManager;
-        mSnippetListItems = Collections.emptyList();
-    }
-
-    /**
-     * Set the list of items to display in the snippets RecyclerView
-     *
-     * @param listItems the new list of items to display
-     */
-    public void setSnippetListItems(List<SnippetListItem> listItems) {
-        mSnippetListItems = listItems;
-        notifyDataSetChanged();
-    }
-
-    @Override
-    public int getItemViewType(int position) {
-        return mSnippetListItems.get(position).getType();
-    }
-
-    @Override
-    public SnippetListItemViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
-        if (viewType == SnippetsManager.SNIPPET_ITEM_TYPE_HEADER) {
-            return new SnippetHeaderItemViewHolder(
-                    SnippetHeaderItemViewHolder.createView(parent), mManager);
-        }
-
-        if (viewType == SnippetsManager.SNIPPET_ITEM_TYPE_SNIPPET) {
-            return new SnippetCardItemViewHolder(
-                    SnippetCardItemViewHolder.createView(parent), mManager);
-        }
-
-        return null;
-    }
-
-    @Override
-    public void onBindViewHolder(SnippetListItemViewHolder holder, final int position) {
-        holder.onBindViewHolder(mSnippetListItems.get(position));
-    }
-
-    @Override
-    public int getItemCount() {
-        return mSnippetListItems.size();
-    }
-}