Merge "Enable dragging caption via App Info view." into udc-dev am: 53a00e5846

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

Change-Id: Icc684f5e95fefd691553f931fbc8be9dc9cdca01
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>