Merge "Add taskbarIconSize to GridOption/DisplayOptions" into tm-qpr-dev am: 085c53869f am: 3cd39729dc

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/22228076

Change-Id: I3cb2d462cef1df514c87418ed70ac624899c21fd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>