Merge "MediaRouter: Defer releasing routing controller when transfer" into rvc-dev am: 82ff3f14 am: e08ef1e6 am: 4d276f16 am: 8400cbd7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11593494

Change-Id: I8769fcd8d9229a5e2c83d31b86792ce48bea273a