Merge "Return copies of private array members in Display.java to protect them from being modified from the outside." into udc-dev am: 037b13c9 am: f7be0b46

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22648883



Change-Id: Ic136fae69f448cb16e8e48e0530835ae1fb41304
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>