Merge "Revert "[Media] Update background gradient scrim to use album theme...

Merge "Revert "[Media] Update background gradient scrim to use album theme colors."" into tm-dev am: 783f9c90 am: 026ca0bb

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18027822



Change-Id: I432899fbdb2083ac289fd09668638b351205f06e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>