Delete .store_new files if writing to disk fails when applying an update

R=drubery

Bug: 934060
Change-Id: Id95aeeead0dc3c5e60bf837d1bc8222385633471
Reviewed-on: https://chromium-review.googlesource.com/c/1490905
Auto-Submit: Varun Khaneja <vakh@chromium.org>
Commit-Queue: Daniel Rubery <drubery@chromium.org>
Reviewed-by: Daniel Rubery <drubery@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636065}
1 file changed