Migrate Test Targets to New Android Ownership Model am: e97783b389 am: e224e186ed

Original change: https://android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/2944289

Change-Id: Ia1a861d062a702ce8c5e739f89792c17732af150
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>