Merge "Using a runtime generated layout for tests instead of defining xml" into udc-dev am: 348e518b2c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/22578910

Change-Id: I38abe3973760f55f07b171e0d5d7457bbfd840ae
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>