Merge changes from topic "smartspace-on-dream-overlay" into tm-qpr-dev am: 460cffff22 am: 4c5c82656e am: c5840c8b9c am: 43970ca983

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21543524

Change-Id: Ifb8f43c88427568200ebc596e85dcb378b70c915
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>