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This reverts commit 513d84a6.

Reason for revert: it breaks the unit-tests.

Original change's description:
> Relanding "Abstrating file access operation in zip creation."
> 
> Disabled the added conditions that caused the tests to fail (only on the
> build bots) and added logs for investigation.
> 
> Bug: 772815
> Tbr: isherman
> Change-Id: I1f20bfe40288b6822397d469863deb643a93b17d
> Reviewed-on: https://chromium-review.googlesource.com/716597
> Commit-Queue: Jay Civelli <jcivelli@chromium.org>
> Reviewed-by: Jay Civelli <jcivelli@chromium.org>
> Reviewed-by: Ilya Sherman <isherman@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#508539}

TBR=jcivelli@chromium.org,isherman@chromium.org

Change-Id: Ife1a2ebe47b29b4231125aef4058c489d254baf4
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 772815
Reviewed-on: https://chromium-review.googlesource.com/717737Reviewed-by: Jay Civelli <jcivelli@chromium.org>
Commit-Queue: Jay Civelli <jcivelli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#508578}