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: I41651abd06e9c6c7b8b8ea5f4ee93202885ad081
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>