Prabir MSP contributed to the google/perfetto repository by introducing an explicit typedef for the key_code field in the AndroidInputEvent proto definition. This change, implemented using protobuf, enhanced type safety and clarified the API contract without altering existing runtime behavior. Prabir’s approach focused on improving maintainability and reducing the risk of misinterpretation for downstream consumers, ensuring backward compatibility while enabling safer future refactoring. The work included updating documentation and preparing the code for review, supporting broader adoption across teams. Although no bugs were fixed during this period, the targeted improvement demonstrated careful attention to reliability and long-term code quality.