Merge "Implement app icon overlay for entering PiP" into tm-qpr-dev am: bfcdd23597

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/21186942

Change-Id: I2db4a028c4dfb1eb1d4e49650fdfd1ef2280d4bc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>