Merge "System Property Flag for Monochromatic" into tm-qpr-dev am: 70d368f3 am: 0414b0b0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20339752



Change-Id: Ifefa8565634df4bf38a96114506635098e7f965b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>