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

chrome/android/java_sources.gni

 # 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.
 
 chrome_java_sources = [
   "java/src/com/google/android/apps/chrome/appwidget/bookmarks/BookmarkThumbnailWidgetProvider.java",
   "java/src/org/chromium/chrome/browser/ActivityTabTaskDescriptionHelper.java",
   "java/src/org/chromium/chrome/browser/ActivityTaskDescriptionIconGenerator.java",
   "java/src/org/chromium/chrome/browser/AfterStartupTaskUtils.java",
   "java/src/org/chromium/chrome/browser/AppIndexingUtil.java",
@@ skipping 632 matching lines @@
   "java/src/org/chromium/chrome/browser/ntp/cards/ChildNode.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/InnerNode.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/ImpressionTracker.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/ItemViewType.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/Leaf.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/Footer.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapter.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageRecyclerView.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageViewHolder.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/NodeParent.java",
+  "java/src/org/chromium/chrome/browser/ntp/cards/NodeVisitor.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/OptionalLeaf.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/ProgressIndicatorView.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/ProgressItem.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/ProgressViewHolder.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/SectionList.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/SignInPromo.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/SpacingItem.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/StatusCardViewHolder.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/StatusItem.java",
   "java/src/org/chromium/chrome/browser/ntp/cards/SuggestionsCategoryInfo.java",
@@ skipping 1134 matching lines @@
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/SyncTestBase.java",
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/TypedUrlsTest.java",
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/ui/PassphraseTypeDialogFragmentTest.java",
 ]
 
 # Only used for testing, should not be shipped to end users.
 if (!is_official_build) {
   chrome_java_sources += [ "java/src/org/chromium/chrome/browser/offlinepages/evaluation/OfflinePageEvaluationBridge.java" ]
   chrome_test_java_sources += [ "javatests/src/org/chromium/chrome/browser/offlinepages/OfflinePageSavePageLaterEvaluationTest.java" ]
 }