Move notification generation to a service.

Generating notifications requires looking up the list of calls to
include and the name of the callers.

Instead of doing this on the onReceive, move this to a service. By using
IntentService this will be done on a worker thread.

Bug: 5036195
Change-Id: Idb6e80c802e40398888bb76f52ad7c5457aea945
4 files changed