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

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



Change-Id: Iefc523d51701125fc0407aa6aaa1dbcf40e8d9b4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>