[wv] Add a jank approximation metric for WebView This CL adds trace processor support for running WebView trace-based metrics by following Chrome's example. Also adds a new webview_jank_approximation metric that calculates the number of janks overlapping WebView renderer slices. Bug: 273555049 Change-Id: I998765921b7f7a9bf8c98f0355290e7d8919a428
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.