GitLab

- Throttle by extending the interval if user has
 two consecutive dismiss on notification.

Bug: 1013685
Change-Id: If476dc4aeda7bcd6eff7ecd47e2428605fcd6c42
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1988898
Commit-Queue: Hesen Zhang <hesen@chromium.org>
Reviewed-by: Xing Liu <xingliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#729533}