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This is mostly duplicate code.

Bug: 
Change-Id: Id152dc65ef53eac65d40ef38b6b9da3f962ae9ba
Reviewed-on: https://chromium-review.googlesource.com/832295Reviewed-by: Yuichiro Hanada <yhanada@chromium.org>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Commit-Queue: Blake O'Hare <blakeo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#533168}