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: Ifeedd53f99884e6975e00fce76dc70488e4e6f23
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>