smbprovider: Add CreateDirectory protobuf

Adds CreateDirectory protobuf used for passing inputs to
CreateDirectory and method name.

BUG=chromium:757625
TEST=emerges

Change-Id: I5916e2fecabddc2cda141ed275b9678423476b49
Reviewed-on: https://chromium-review.googlesource.com/896110
Commit-Ready: Allen Vicencio <allenvic@chromium.org>
Tested-by: Allen Vicencio <allenvic@chromium.org>
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Reviewed-by: Bailey Berro <baileyberro@chromium.org>
2 files changed