tools: add some type annotations and cleanup bp/bazel generators Change-Id: I45c8f8315eece4b4c63cae73d0343b90dbd2d206
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.