Merge "Specify stage and bounds for desktop split." into udc-qpr-dev am: 8020100928

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/24376138

Change-Id: I38e200140074f2f2ee3dd4ffa5068babb1886e96
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>