regenerate metrics descriptor Missed in https://r.android.com/2057637 Change-Id: Ia30e266e93f82384d4b36cff249394b81811112c
Perfetto is a production-grade open-source stack for performance instrumentation and trace analysis. It offers services and libraries and for recording system-level and app-level traces, native + java heap profiling, a library for analyzing traces using SQL and a web-based UI to visualize and explore multi-GB traces.
See https://perfetto.dev/docs or the /docs/ directory for documentation.