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Revert of Add failure screenshots and render test images to results detail. (patchset #8 id:130001 of https://codereview.chromium.org/2701473003/ )

Reason for revert:
Reverting :( this since using find_depot_tools doesnt work on some bots. Will have to find alternative and reland.

Original issue's description:
> Add failure screenshots and render test images to results detail.
>
> Review-Url: https://codereview.chromium.org/2701473003
> Cr-Commit-Position: refs/heads/master@{#453039}
> Committed: https://chromium.googlesource.com/chromium/src/+/191a06d04a38e8b322c326d42433cbb1f5575025

TBR=yolandyan@chromium.org,hzl@chromium.org,hzl@google.com,jbudorick@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.

Review-Url: https://codereview.chromium.org/2737223002
Cr-Commit-Position: refs/heads/master@{#455639}