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

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



Change-Id: Ic96ddef56567e0e78013ebdd4727b3a90fd1975c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>