Merge "simpleperf: Add --user-buffer-size in record cmd" am: c9664bd4f9

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/2443762

Change-Id: Iefabb1b992e73348540cb580d5b09e3ea2e95746
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>