Cross Reference: /external/cros/system_api/dbus/cryptohome

`Name`	`Date`	`Size`
Up to higher level directory
`dbus-constants.h`	06-Dec-2017	`8.1K`
`key.proto`	06-Dec-2017	`3.4K`
`rpc.proto`	06-Dec-2017	`11.4K`
`signed_secret.proto`	06-Dec-2017	`1.2K`