Merge "Implement low light dream library." into tm-qpr-dev am: bde7caf8 am: 25f7ef12

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19745952



Change-Id: Ida47b89e7780524b5484d42e68cb01b39796a69e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>