I want to use this in the Codesearch builder to replace the hack in
crrev.com/c/1126693.

Bug: 860397
Change-Id: I174a684cbff0f993b5c657bc2e32105cb49d253a
Reviewed-on: https://chromium-review.googlesource.com/1132266
Commit-Queue: Joey Scarr <jsca@chromium.org>
Reviewed-by: Aaron Gable <agable@chromium.org>
Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>