Merge "simpleperf: Add comment for the mv command fallback." am: c0766c1cea am: f0f73ba682 am: 1756ed7795

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/2507935

Change-Id: I4d4638aee37f68d17465ccd16211c4433e73036a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>