Merge "Revert "Add elevation to dream home controls button."" into udc-dev am: 37b8ca63

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23089776



Change-Id: I37ec7e1a1d0b6c48f1743d537d86563e7dc448fa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>