Fix -fpermissive: '<::' cannot begin a template-argument list
Fix -fpermissive: '<::' cannot begin a template-argument list

'<:' is an alternate spelling for '['.
google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf