Merge "Consolidate drag to split gesture with shell transition" into...

Merge "Consolidate drag to split gesture with shell transition" into tm-qpr-dev am: 14376ccd am: 3a1f3422

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19125490



Change-Id: I2bd19b832c3d31f80b211ae33f219d9793e92f10
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>