[Suggestions] Remove TreeNode.getSuggestionAt() in favor of a visitor.

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

 // 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 android.graphics.Rect;
 import android.support.annotation.CallSuper;
 import android.support.annotation.DrawableRes;
 import android.support.v4.view.animation.FastOutSlowInInterpolator;
@@ skipping 19 matching lines @@
 import org.chromium.chrome.browser.widget.displaystyle.UiConfig;
 
 /**
  * Holder for a generic card.
  *
  * Specific behaviors added to the cards:
  *
  * - Cards can peek above the fold if there is enough space.
  *
  * - When peeking, tapping on cards will make them request a scroll up (see
- *   {@link SuggestionsRecyclerView#scrollToFirstCard()}). Tap events in non-peeking state will be
+ *   {@link SuggestionsRecyclerView#interceptCardTapped}). Tap events in non-peeking state will be
  *   routed through {@link #onCardTapped()} for subclasses to override.
  *
  * - Cards will get some lateral margins when the viewport is sufficiently wide.
  *   (see {@link HorizontalDisplayStyle#WIDE})
  *
  * Note: If a subclass overrides {@link #onBindViewHolder()}, it should call the
  * parent implementation to reset the private state when a card is recycled.
  */
 public abstract class CardViewHolder
         extends NewTabPageViewHolder implements ContextMenuManager.Delegate {
@@ skipping 275 matching lines @@
         if (hasCardAbove && hasCardBelow) return R.drawable.card_middle;
         if (!hasCardAbove && hasCardBelow) return R.drawable.card_top;
         if (hasCardAbove && !hasCardBelow) return R.drawable.card_bottom;
         return R.drawable.card_single;
     }
 
     public SuggestionsRecyclerView getRecyclerView() {
         return mRecyclerView;
     }
 }