Merge "Remove constructors and defer creating the Handler to onBind." into udc-dev am: a0961285

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21476514



Change-Id: I4fc77c5ab9586938e390de9b30b9610b0e24fb8c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>