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These methods are unused and were missed during earlier clean up.

Bug: b:157237955
Change-Id: Ia3f45af1f206cf817544705af4500ebcf77cf74f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2226916
Commit-Queue: David Black <dmblack@google.com>
Reviewed-by: David Black <dmblack@google.com>
Reviewed-by: Xiaohui Chen <xiaohuic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#775194}