Merge "MediaProjection: stop media projection activity result from being...

Merge "MediaProjection: stop media projection activity result from being stored after being sent" into udc-dev am: f682c0d4 am: 0abb54fd

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21910526



Change-Id: Ia4f970b87e733a470f7f01d6559f01bf563c17c5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>