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

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/InnerNode.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/InnerNode.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/InnerNode.java
index b80d30241162862d312e4bbae52bef3316b5d8e1..3052d0e240d427d2a9a9531591190b63ecb113bb 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/InnerNode.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/InnerNode.java
@@ -9,7 +9,6 @@ import android.support.annotation.Nullable;
 import org.chromium.base.Callback;
 import org.chromium.base.VisibleForTesting;
 import org.chromium.chrome.browser.ntp.cards.NewTabPageViewHolder.PartialBindCallback;
-import org.chromium.chrome.browser.ntp.snippets.SnippetArticle;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -84,13 +83,6 @@ public class InnerNode extends ChildNode implements NodeParent {
     }
 
     @Override
-    public SnippetArticle getSuggestionAt(int position) {
-        int index = getChildIndexForPosition(position);
-        return mChildren.get(index).getSuggestionAt(
-                position - getStartingOffsetForChildIndex(index));
-    }
-
-    @Override
     public Set<Integer> getItemDismissalGroup(int position) {
         int index = getChildIndexForPosition(position);
         int offset = getStartingOffsetForChildIndex(index);
@@ -107,6 +99,13 @@ public class InnerNode extends ChildNode implements NodeParent {
     }
 
     @Override
+    public void visitItems(NodeVisitor visitor) {
+        for (TreeNode child : getChildren()) {
+            child.visitItems(visitor);
+        }
+    }
+
+    @Override
     public void onItemRangeChanged(
             TreeNode child, int index, int count, @Nullable PartialBindCallback callback) {
         notifyItemRangeChanged(getStartingOffsetForChild(child) + index, count, callback);