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

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

Change-Id: I018617456fcabf524fcdb1356ae2afbf1550deb8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>