Merge "Add API to specify background color for animations" into sc-qpr1-dev am: 14886c50 am: 8ae2f6e8 am: d02e5728

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15836428

Change-Id: I1e422cb5033a408556c43baab7d9aa711dda78a5