Merge "Show chevron on DndTile if it'd show dialog" into sc-v2-dev am: 635a90d46a am: 3f8490f74a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16263949

Change-Id: Ia176ddc3db58c6b2e37b44fe69dad8c50b3c8ca8