Merge "simpleperf: Fix calculation of lost sample percentage in userspace" am: 905c121a88 am: ba362371b1 am: 7d6d0f6b8a

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/2545490

Change-Id: If608a1de5f96ecfc23ce7a1f95dbbaac2c832cff
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>