Imports
- github.com/golang/protobuf/proto
- github.com/luci/luci-go/common/logging
- github.com/luci/luci-go/server/auth/identity
- github.com/luci/luci-go/server/auth/internal
- github.com/luci/luci-go/server/auth/service/protocol
- github.com/luci/luci-go/server/auth/signing
- golang.org/x/net/context