result_flow: add request and response proto for sub-command

BUG=chromium:1085958
TEST=./generate.sh

Change-Id: I752f0c81d47e507089ccbabab17f4a80d19be2e4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2232178
Commit-Queue: Xinan Lin <linxinan@chromium.org>
Tested-by: Xinan Lin <linxinan@chromium.org>
Reviewed-by: Alex Zamorzaev <zamorzaev@chromium.org>
6 files changed