Cross Reference: /external/chromium_org/mojo/examples/echo

`Name`	`Date`	`Size`
Up to higher level directory
`BUILD.gn`	23-Apr-2015	`1.1K`
`echo_client.cc`	23-Apr-2015	`1.2K`
`echo_service.cc`	23-Apr-2015	`1.3K`
`echo_service.mojom`	23-Apr-2015	`268`