Doing some refactoring to perfetto  build files. Rolling to
ensure that we are not breaking embedders in the process.

Cq-Include-Trybots: luci.v8.try:v8_linux64_perfetto_dbg_ng
Bug: v8:8339
Change-Id: I5c603680cf6dd295e9d11a4eba70785e6dc512ba
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1773244
Auto-Submit: Primiano Tucci <primiano@chromium.org>
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Tamer Tas <tmrts@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63420}