Merge "Clarify documentation about targets of DND-related broadcasts" into...

Merge "Clarify documentation about targets of DND-related broadcasts" into tm-qpr-dev am: f36bf2c7 am: c9576428 am: fc271b97

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21479685



Change-Id: I3d01cb3c99adc1cca5105b59a1a7e9ac97b8beec
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>