Merge "Move Taskbar background drawing to TaskbarBackgroundRenderer" into tm-dev am: 8bb0bdc42b

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17766315

Change-Id: I23c67fd34b8726a5620e730e4bdeb0cace18dc8c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>