Introduce SimpleDownloadManager to support reduced mode


Bug: 942770
Change-Id: I780f7a863c519cd9a2fc885c29df8fc20786b917
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1526686
Commit-Queue: Min Qin <qinmin@chromium.org>
Reviewed-by: Shakti Sahu <shaktisahu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#642077}
5 files changed