Merge "If task dragged to outer disallowed area, position back under the area"...

Merge "If task dragged to outer disallowed area, position back under the area" into udc-qpr-dev am: 5132a790

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23621248



Change-Id: Ib70ee21f0c232c36900a55b87ffcb0b9ca5a6742
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>