The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e1166217ce22a672e5216ee0806847d4416a086f

commit e1166217ce22a672e5216ee0806847d4416a086f
Author: Min Qin <qinmin@chromium.org>
Date: Wed Jul 18 00:35:12 2018

Don't update history db for incompleted download if DownloadDB is enabled

if DownloadDB is enabled, there is no need to update incomplete download
in history db.
The DownloadDB should contain all information.

BUG=863602

Change-Id: Idf20bbb91e8e5156aa21354695b0781493c723ef
Reviewed-on: https://chromium-review.googlesource.com/1137235
Commit-Queue: Min Qin <qinmin@chromium.org>
Reviewed-by: Xing Liu <xingliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575873}
[modify] https://crrev.com/e1166217ce22a672e5216ee0806847d4416a086f/chrome/browser/download/download_history.cc
[modify] https://crrev.com/e1166217ce22a672e5216ee0806847d4416a086f/chrome/browser/download/download_history.h