The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/546d7617f3226dd57af418b42c02ba0d757e6d24

commit 546d7617f3226dd57af418b42c02ba0d757e6d24
Author: Vladislav Kaznacheev <kaznacheev@google.com>
Date: Thu Oct 04 19:50:11 2018

cros: Add UMA for app shortcut search

  search box, click "Add contact" shortcut, open chrome://histogram,
  find Apps.AppListSearchResultOpenType, bucket #10 should be non-empty.

Bug:  891063 
Test: set enable-app-shortcut-search fag, enter "cont" query in launcher
Change-Id: Ic8cb56460d4ed732196613ede6922613b239a54a
Reviewed-on: https://chromium-review.googlesource.com/c/1261452
Reviewed-by: Alex Newcomer <newcomer@chromium.org>
Reviewed-by: Jenny Zhang <jennyz@chromium.org>
Commit-Queue: Vladislav Kaznacheev <kaznacheev@chromium.org>
Cr-Commit-Position: refs/heads/master@{#596813}
[modify] https://crrev.com/546d7617f3226dd57af418b42c02ba0d757e6d24/chrome/browser/ui/app_list/search/arc/arc_app_shortcut_search_result.cc
[modify] https://crrev.com/546d7617f3226dd57af418b42c02ba0d757e6d24/chrome/browser/ui/app_list/search/search_util.h
[modify] https://crrev.com/546d7617f3226dd57af418b42c02ba0d757e6d24/tools/metrics/histograms/enums.xml