Merge "Add an explicit android:exported flag." am: a322e3232b am: 10fe66e166

Original change: https://android-review.googlesource.com/c/platform/development/+/1547214

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I7e32a1421ee03b4063f796f3d24142d4b00ab0d4