Merge "Revert "simpleperf: refactor code setting sample rate"" into main am: a31b607267

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/2792672

Change-Id: I6ec2e5c53feb54af3311c8520595cf639b61f6ed
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>