Merge "Properly handling situation when display is added and removed...

Merge "Properly handling situation when display is added and removed instantly" into udc-dev am: 23636fed

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22761588



Change-Id: I03288cc7d3558c68602ceab8ab3d4a515a0f1cc5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>