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

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

Change-Id: I05f36e5a990d7257f85fbd40c339c725745fe321
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>