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

Merge "[Media] Update background gradient scrim to use album theme colors." into tm-dev am: 64bf097a am: 5d7b72bf

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17896371



Change-Id: I98611ae0a1d83917b8afbda29019fa80e1cc121d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>