Merge "Revert "Only allow root/system UIDs to send broadcast to unexported...

Merge "Revert "Only allow root/system UIDs to send broadcast to unexported receiver"" into tm-dev am: aea49e77

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17573848



Change-Id: Ic755541b96f5f4e36a2c67a9bde5d14305b3ccb5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>