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

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetCardItemViewHolder.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetCardItemViewHolder.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetCardItemViewHolder.java
deleted file mode 100644
index d032d52caff3d322c48fce7c0c0f9c20fa903159..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetCardItemViewHolder.java
+++ /dev/null
@@ -1,111 +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.view.LayoutInflater;
-import android.view.View;
-import android.view.View.OnClickListener;
-import android.view.ViewGroup;
-import android.widget.ImageView;
-import android.widget.TextView;
-
-import org.chromium.base.metrics.RecordHistogram;
-import org.chromium.base.metrics.RecordUserAction;
-import org.chromium.chrome.R;
-import org.chromium.chrome.browser.ntp.NewTabPageUma;
-import org.chromium.chrome.browser.ntp.snippets.SnippetsManager.SnippetArticle;
-import org.chromium.chrome.browser.ntp.snippets.SnippetsManager.SnippetListItem;
-
-/**
- * A class that represents the view for a single card snippet.
- */
-class SnippetCardItemViewHolder extends SnippetListItemViewHolder implements View.OnClickListener {
-    public TextView mHeadlineTextView;
-    public TextView mPublisherTextView;
-    public TextView mArticleSnippetTextView;
-    public TextView mReadMoreLinkTextView;
-    public ImageView mThumbnailView;
-    public String mUrl;
-    public int mPosition;
-
-    /**
-     * Creates the CardView object to display snippets information
-     *
-     * @param parent The parent view for the card
-     * @return a CardView object for displaying snippets
-     */
-    public static View createView(ViewGroup parent) {
-        return LayoutInflater.from(parent.getContext())
-                .inflate(R.layout.new_tab_page_snippets_card, parent, false);
-    }
-
-    /**
-     * Constructs a SnippetCardItemView item used to display snippets
-     *
-     * @param cardView The View for the snippet card
-     * @param manager The SnippetsManager object used to open an article
-     */
-    public SnippetCardItemViewHolder(View cardView, SnippetsManager manager) {
-        super(cardView, manager);
-
-        cardView.setOnClickListener(this);
-        mThumbnailView = (ImageView) cardView.findViewById(R.id.article_thumbnail);
-        mHeadlineTextView = (TextView) cardView.findViewById(R.id.article_headline);
-        mPublisherTextView = (TextView) cardView.findViewById(R.id.article_publisher);
-        mArticleSnippetTextView = (TextView) cardView.findViewById(R.id.article_snippet);
-        mReadMoreLinkTextView = (TextView) cardView.findViewById(R.id.read_more_link);
-        mReadMoreLinkTextView.setOnClickListener(new OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                loadUrl(mUrl);
-                RecordUserAction.record("MobileNTP.Snippets.Click");
-                RecordHistogram.recordSparseSlowlyHistogram(
-                        "NewTabPage.Snippets.CardClicked", mPosition);
-                RecordHistogram.recordEnumeratedHistogram(SnippetsManager.SNIPPETS_STATE_HISTOGRAM,
-                        SnippetsManager.SNIPPETS_CLICKED, SnippetsManager.NUM_SNIPPETS_ACTIONS);
-                NewTabPageUma.recordAction(NewTabPageUma.ACTION_OPENED_SNIPPET);
-            }
-        });
-        cardView.addOnAttachStateChangeListener(new View.OnAttachStateChangeListener() {
-            @Override
-            public void onViewAttachedToWindow(View v) {
-                RecordHistogram.recordSparseSlowlyHistogram(
-                        "NewTabPage.Snippets.CardShown", mPosition);
-            }
-
-            @Override
-            public void onViewDetachedFromWindow(View v) {}
-        });
-    }
-
-    @Override
-    public void onClick(View v) {
-        // Toggle visibility of snippet text
-        int visibility =
-                (mArticleSnippetTextView.getVisibility() == View.GONE) ? View.VISIBLE : View.GONE;
-        mArticleSnippetTextView.setVisibility(visibility);
-        mReadMoreLinkTextView.setVisibility(visibility);
-
-        String action = visibility == View.VISIBLE ? "MobileNTP.Snippets.ShowMore"
-                                                   : "MobileNTP.Snippets.ShowLess";
-        String histogram = visibility == View.VISIBLE ? "NewTabPage.Snippets.CardExpanded"
-                                                      : "NewTabPage.Snippets.CardHidden";
-        RecordUserAction.record(action);
-        RecordHistogram.recordSparseSlowlyHistogram(histogram, mPosition);
-    }
-
-    @Override
-    public void onBindViewHolder(SnippetListItem snippetItem) {
-        SnippetArticle item = (SnippetArticle) snippetItem;
-
-        mHeadlineTextView.setText(item.mTitle);
-        mPublisherTextView.setText(item.mPublisher);
-        mArticleSnippetTextView.setText(item.mPreviewText);
-        mUrl = item.mUrl;
-        mPosition = item.mPosition;
-
-        item.setThumbnailOnView(mThumbnailView);
-    }
-}