There is no TRACE_EVENT_ASYNC_STEP in the perfetto legacy API. The corresponding legacy API that matches best is TRACE_EVENT_ASYNC_STEP_INTO. Bug: b/42226290 Change-Id: I6725973895878e34d96b6cd3314ab8de402a911b Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/349120 Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Evan Shrubsole <eshr@google.com> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/main@{#42219}