This macro only exists on MSVC

BUG=None

Change-Id: I23204d1307279840a7f85a005da9ed5c324e7dae
Reviewed-on: https://chromium-review.googlesource.com/309800
Tryjob-Request: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>