Cross Reference: /prebuilts/tools/common/m2/repository/com/google/protobuf

`Name`	`Date`	`Size`
Up to higher level directory
`nano/`	21-Oct-2016
`protobuf-gradle-plugin/`	21-Oct-2016
`protobuf-java/`	21-Oct-2016
`protoc/`	21-Oct-2016