Merge "Show and hide smartspace (1/3)" into udc-dev am: 8278c862

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23412556



Change-Id: Ie86b9f476c84374ea87d0c31ff06259609d56c06
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>