Merge "Reapply "simpleperf: refactor code setting sample rate"" into main am: b3bc35b9bb

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/2794972

Change-Id: Ia6eae510214bb409074a63f2e35637abf3e2d8b2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>