Add a placeholder directory for chromiumos/config proto definitions

BUG=chromium:1069877
TEST=./generate.sh

Change-Id: I74276f9e0de40245b080c89b22452f262c229fa6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2151128
Tested-by: Prathmesh Prabhu <pprabhu@chromium.org>
Auto-Submit: Prathmesh Prabhu <pprabhu@chromium.org>
Reviewed-by: Andrew Lamb <andrewlamb@chromium.org>
Commit-Queue: Andrew Lamb <andrewlamb@chromium.org>
1 file changed