Merge changes from topic "telephony-background-cb" am: f3a83b6c am:...

Merge changes from topic "telephony-background-cb" am: f3a83b6c am: 365c6b66 am: 0a247cb5 am: a79ee5c9 am: 53bee653

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1653202

Change-Id: Id6a2e00ff117c24ac2ec052e508a1f60e7aab243