This is the same change as in https://chromium-review.googlesource.com/c/586594
applied to _DepsOsToLines.

Bug: 570091
Change-Id: I06a4dc3a9b6dbb001a15b1d7b88fef12cf6c6aaa
Reviewed-on: https://chromium-review.googlesource.com/609980Reviewed-by: Emma Söderberg <emso@chromium.org>
Commit-Queue: Paweł Hajdan Jr. <phajdan.jr@chromium.org>