GitLab

Now only messages with allow_dont_show_again set to true will show the
"Don't show again" check box.

Bug: 1001291
Change-Id: I920a8bf6188a063a078d230b38c4543ae108bb25
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1846237Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Commit-Queue: Yuwei Huang <yuweih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703493}