Merge "Don't send broadcast to unprepared apps" into sc-dev am: 887a3931 am:...

Merge "Don't send broadcast to unprepared apps" into sc-dev am: 887a3931 am: 7d73c2d9 am: 5c25cabc

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14531190

Change-Id: Id17bf4460513b40a62f6838f9c0b2eb01101828c