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: I08a1591a4535c8cd560c5f341efe4f90355cd427
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>