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This CL removed a for-test function since it's no longer used.

Bug: NONE
Change-Id: I998b98f68e9bba9f8366747c4bc7854dfbc97ba3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1728180Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Xing Liu <xingliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#683212}