Merge "Validate ComponentName for MediaButtonBroadcastReceiver" into sc-dev am: 3a186d92c2 am: eabbae0149 am: 6a3ea2b6c5 am: cf672a9a5f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23352460

Change-Id: Ic453536edb586baeaf66182ba375f3f3f4ef0c1d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>