[Suggestions] Add User action UMA for context menu actions

chrome/android/java/src/org/chromium/chrome/browser/suggestions/TileGroup.java

 // Copyright 2017 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.suggestions;
 
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.Color;
 import android.graphics.drawable.BitmapDrawable;
 import android.support.annotation.Nullable;
 import android.support.v4.graphics.drawable.RoundedBitmapDrawable;
 import android.support.v4.graphics.drawable.RoundedBitmapDrawableFactory;
 import android.view.ContextMenu;
 import android.view.ContextMenu.ContextMenuInfo;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.View.OnCreateContextMenuListener;
 import android.view.ViewGroup;
 
 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.base.Callback;
 import org.chromium.base.Log;
 import org.chromium.base.VisibleForTesting;
+import org.chromium.base.metrics.RecordUserAction;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.ChromeFeatureList;
 import org.chromium.chrome.browser.favicon.LargeIconBridge.LargeIconCallback;
 import org.chromium.chrome.browser.ntp.ContextMenuManager;
 import org.chromium.chrome.browser.ntp.ContextMenuManager.ContextMenuItemId;
 import org.chromium.chrome.browser.offlinepages.OfflinePageBridge;
 import org.chromium.chrome.browser.widget.RoundedIconGenerator;
 import org.chromium.ui.mojom.WindowOpenDisposition;
 
 import java.util.ArrayList;
@@ skipping 441 matching lines @@
         public void onCreateContextMenu(
                 ContextMenu contextMenu, View view, ContextMenuInfo contextMenuInfo) {
             mContextMenuManager.createContextMenu(contextMenu, view, this);
         }
     }
 
     private class RemovalUndoneCallback extends Callback<String> {
         @Override
         public void onResult(String restoredUrl) {
             mPendingInsertionUrl = restoredUrl;
+
+            RecordUserAction.record("Suggestions.Tile.RemovalUndone");
         }
     }
 
     private class OfflineModelObserver extends SuggestionsOfflineModelObserver<Tile> {
         public OfflineModelObserver(OfflinePageBridge bridge) {
             super(bridge);
         }
 
         @Override
         public void onSuggestionOfflineIdChanged(Tile suggestion, @Nullable Long id) {
             // Retrieve a tile from the internal data, to make sure we don't update a stale object.
             Tile tile = getTile(suggestion.getUrl());
             if (tile == null) return;
 
             boolean oldOfflineAvailable = tile.isOfflineAvailable();
             tile.setOfflinePageOfflineId(id);
 
             // Only notify to update the view if there will be a visible change.
             if (oldOfflineAvailable == tile.isOfflineAvailable()) return;
             mObserver.onTileOfflineBadgeVisibilityChanged(tile);
         }
 
         @Override
         public Iterable<Tile> getOfflinableSuggestions() {
             return Arrays.asList(mTiles);
         }
     }
 }