copy servo.proto definition from upstream.

Note that this is not a verbatim copy of the upstream definition.
We have to change the package name.

BUG=160615577
TEST=regenerate configs

Change-Id: I2292f8ea916548c2a2a63792ce5a5d18101451dc
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2338822
Reviewed-by: Xixuan Wu <xixuan@chromium.org>
Commit-Queue: Gregory Nisbet <gregorynisbet@google.com>
Tested-by: Gregory Nisbet <gregorynisbet@google.com>
2 files changed