Merge "Reset notification shade background tints when theme changes." into tm-d1-dev am: abf75512

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18868865



Change-Id: Ic122c03388adaf37758078998ba3a05fafdc0af6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>