Merge "Restrict panel to supportMultiWindow" into udc-dev am: 02f10a32 am: 2eff52a6 am: 21ae3dad am: 11a4a410

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23375808



Change-Id: I4987fe02656e54ef2703543731cdb5dab132e378
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>