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

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

Change-Id: I23868e4936b794bdf51b60ec61c90c7e55a0faed
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>