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Given that for now the call must remain present but the precise semantics
of the call aren't important (see
https://codereview.chromium.org/2882063002/#msg64), it's worthwhile having
as clean and simple an implementation of reasonable semantics as possible.

BUG=None
R=mmenke@chromium.org

Review-Url: https://codereview.chromium.org/2974363002
Cr-Commit-Position: refs/heads/master@{#486248}