Merge "Enable dragging caption via App Info view." into udc-dev am: 53a00e58 am: e3171c02

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22607399



Change-Id: I32eaf4c6daecbe1a309d1ebc2b029ba3a714dcdb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>