Merge "Enable shell drag and drop logging to diagnose drag failure" into tm-qpr-dev am: 915edab6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19895066



Change-Id: I38efeda94f7ff945a3e315dc2b78cf967025da21
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>