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This handles outgoing transfer updates from the PayloadTracker and
gracefully closes outgoing connections after 1 minute.

Bug: 1085067
Change-Id: Ia16fc5fdb8cfd1846b130385414064dc3bd2a8cd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2379900Reviewed-by: Himanshu Jaju <himanshujaju@chromium.org>
Commit-Queue: Richard Knoll <knollr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#802771}