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 am: 9d450d0c

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



Change-Id: Ibc1c61a9133118aa93638460d646864a30fa7a42
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>