Fix warnings on Linux BUG= Change-Id: I24ed2a2ee85a152ef79fc9cb2c3b067bbbaedf05 Reviewed-on: https://chromium-review.googlesource.com/293310 Reviewed-by: Jamie Madill <jmadill@chromium.org> Tested-by: Corentin Wallez <cwallez@chromium.org>