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The APIs were updated to use output path but the calls were not updated
and causing folder not found warnings. Update the call to fix. Added a
unit test to ensure correct argument is passed in.

Bug: None
Change-Id: I7e8405bdf4ac61d47e78a968a25587dac28e09e8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2529239Reviewed-by: Justin Cohen <justincohen@chromium.org>
Commit-Queue: Zhaoyang Li <zhaoyangli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#826543}