Merge "Add SwipeHelper dump to better understand the error state." into udc-dev am: fb1709fd am: 1c0e5cff

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23449469



Change-Id: Id5f7aa0d5d830babb1ee619d302d05dc5e4b5863
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>