GitLab

CheckinRequest uses a non-existent #define for ChromeOS,
defined(CHROME_OS), we should replace it with defined(OS_CHROMEOS).

Bug: 1121653
Change-Id: Ieae0bdf874c006296bfedc4da3cd2394b4e3a9ac
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2434777Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Lan Wei <lanwei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#811519}