GitLab

This will filter any further TransferMetadata updates afterr receiving a
final status one.

Bug: 1085067
Change-Id: I75fa89ad57f61cf81ed7738c6b646218f3823e32
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2368598Reviewed-by: Alex Chau <alexchau@chromium.org>
Commit-Queue: Richard Knoll <knollr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800722}