[automerger skipped] Merge "Remove uses of background color attribute" into sc-qpr1-dev am: d0561dcae0 -s ours

am skip reason: Merged-In Iee395289ecd108327fa2acc23d19059b50f52822 with SHA-1 e11ecf0c3a is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15897415

Change-Id: Idb52dc35823ca838abf82ac3109ff5017c0a94e9