While a BackgroundFetch is in progress, there will be a visible notification for the user. Through that notification, the user will be able to pause/resume/cancel the fetch.
Clicking on the notification should navigate to a location defined by the service worker in the fetch, so that the service worker can provide the user with detailed information about the reason for the fetch and the content involved.
Comment 1 by mlamouri@chromium.org
, Feb 22 2017