Add HIDE_NON_SYSTEM_OVERLAY_WINDOWS permission to Nfc This permission is required for xx_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS window flag to function properly. Bug: 180422108 Test: build ok Change-Id: I8246c06c0e7d60d4e06ef4fa430ccd5111e99a43 (cherry picked from commit 9c56b01c5745252c13c05a2fe39faaef130813e5)