Merge "Add system property to enable/disable fling to dismiss for PiP and Bubbles." into tm-qpr-dev am: 65fced038c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19608172

Change-Id: Ic7b922d801d6edbb3250cf5dd3dcbb3c3b351cba
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>