Merge "[DO NOT MERGE] Add setting custom MediaButtonReceiver" into rvc-dev am: 2ad21ed9dd am: 7f2fb0b21b am: 402b034c5e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11629766

Change-Id: I00b6709b4a23c5a53ba54e037b2a19e6f64eb920