Merge "[MediaProjection] Handle null DisplayContent when trying to set the...

Merge "[MediaProjection] Handle null DisplayContent when trying to set the session" into udc-dev am: 9a50b8ad am: 1d46aedb

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23201202



Change-Id: I8bf57eefe1d858388167a20687a5b1055b9cef2a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>