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This got lost in the refactoring. Added test coverage.

BUG=756085,875111
TEST=covered by test

Change-Id: I1b9bbc78b2657a1378b55542786b88f8911a4b9e
Reviewed-on: https://chromium-review.googlesource.com/c/1351144Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Commit-Queue: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#611899}