Revert "Download Home V2 : Cleanup externally removed downloads"

This reverts commit 3bf50ad5026fa1237520a93d322598bd73a14ad9.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> Download Home V2 : Cleanup externally removed downloads
> 
> Bug: 976402
> Change-Id: Icef1bce64612e489c575d4ede2d892d76383b529
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1669990
> Commit-Queue: Shakti Sahu <shaktisahu@chromium.org>
> Reviewed-by: David Trainor <dtrainor@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#671875}

TBR=dtrainor@chromium.org,qinmin@chromium.org,shaktisahu@chromium.org,xingliu@chromium.org

Change-Id: Iaefa934e69969e7a09fe9b145d6663c5e12bd2ff
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 976402
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1676877
Reviewed-by: Shakti Sahu <shaktisahu@chromium.org>
Commit-Queue: Shakti Sahu <shaktisahu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#672183}
1 file changed