track_event_internal: Remove unused global variable It's been unused since r.android.com/1881708 Change-Id: I0d82a6d31ae716be215d611f43d752a8bb5b49b2
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.