Ensure we don't register types with the same name into protobuf. Change-Id: I53d025863fff8c91a067ca5819befa87eb5e35bb
Change-Id: Ia3614846ed49a39c8f39331516d16d45a695240b
Change-Id: I951379c3b2ff00d1bc09d6a49c026a7e723432d6