GitLab

Refactor the scheduling and cancellation of one off tasks that
wake up the browser to process (Periodic) Background Sync registrations
into two methods.

This gets rid of the method that calls the appropriate method and
removes special casing base::TimeDelta::Max() as the delay that causes
cancellation of one-off task.

Unit tests have also been updated.

Bug: 996166
Change-Id: Ic35f4833c627220d464641db82feee8bbfc12ea7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1906213
Commit-Queue: Mugdha Lakhani <nator@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Reviewed-by: Rayan Kanso <rayankans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#715284}