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

`Name`	`Date`	`Size`
Up to higher level directory
`dbus-constants.h`	05-Oct-2017	`7.9K`
`key.proto`	05-Oct-2017	`3.4K`
`rpc.proto`	05-Oct-2017	`10.9K`
`signed_secret.proto`	05-Oct-2017	`1.2K`