Merge "Exclude screen decoration overlay from transition participants" into...

Merge "Exclude screen decoration overlay from transition participants" into udc-qpr-dev am: daba13d7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23897520



Change-Id: Ic258dfcb606cc9fabc32152bcb29c201f164a291
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>