/usr/share/gocode/src/google.golang.org/grpc/reflection/ is in golang-google-grpc-dev 1.0.4-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gocode/src/google.golang.org/grpc/reflection/grpc_reflection_v1alpha/
/usr/share/gocode/src/google.golang.org/grpc/reflection/grpc_reflection_v1alpha/reflection.pb.go
/usr/share/gocode/src/google.golang.org/grpc/reflection/grpc_reflection_v1alpha/reflection.proto
/usr/share/gocode/src/google.golang.org/grpc/reflection/grpc_testing/
/usr/share/gocode/src/google.golang.org/grpc/reflection/grpc_testing/proto2.pb.go
/usr/share/gocode/src/google.golang.org/grpc/reflection/grpc_testing/proto2.proto
/usr/share/gocode/src/google.golang.org/grpc/reflection/grpc_testing/proto2_ext.pb.go
/usr/share/gocode/src/google.golang.org/grpc/reflection/grpc_testing/proto2_ext.proto
/usr/share/gocode/src/google.golang.org/grpc/reflection/grpc_testing/test.pb.go
/usr/share/gocode/src/google.golang.org/grpc/reflection/grpc_testing/test.proto
/usr/share/gocode/src/google.golang.org/grpc/reflection/serverreflection.go
/usr/share/gocode/src/google.golang.org/grpc/reflection/serverreflection_test.go