Merge "Add split screen API to start two split apps with intents" into...

Merge "Add split screen API to start two split apps with intents" into tm-qpr-dev am: e8a3e0a5 am: e5baade0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19379171



Change-Id: I8d5e46dea2a153a78a6a9bfc6037be229562ce9c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>