Removed handling of incognito profile from DownloadBackgroundTask

Since for incognito profiles, the downloads are not required to be resumed
after the profile is closed, we need not schedule background tasks for
download service. This CL cleans up spinning up download service from
the background task.

Bug: 906895
Change-Id: If11e1a548c37922ada6893a126963a229bc147ea
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1517158
Reviewed-by: Min Qin <qinmin@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Shakti Sahu <shaktisahu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#640082}
1 file changed