Merge "Reland "Move wallpaper local color extraction to background"" into tm-qpr-dev am: d5c64afa01

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21445585

Change-Id: I845129e37d9caaa75d1879efea28bbded9693f03
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>