Merge "Divide split screen tests for IW microbenchmark and flicker" into udc-dev am: 7d8d53c8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22896919



Change-Id: I59b9aa0740c618ee391f557c97438bac36d50ded
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>