Merge "Revert "Add redundant tint to notification and footer button...

Merge "Revert "Add redundant tint to notification and footer button backgrounds."" into udc-qpr-dev am: 793ecc19 am: 1daf2b79

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23710292



Change-Id: I7aa799f041d77a330dee852f5d83da2e53fb9ebb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>