WIP: Standardize our use of the PageVisibility API
Todo:
-
Update SmartInterval specs -
Update usage in notes.js
and associated specs
Closes: https://gitlab.com/gitlab-org/gitlab-ce/issues/29854
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Todo:
notes.js
and associated specsCloses: https://gitlab.com/gitlab-org/gitlab-ce/issues/29854