tree eea3094e63ac4e182c4370ef52cc6d086956b86e
parent 637a013d366fd9300fa7a9efb5024ac592bca537
author Nancy Chen <nancychen@google.com> 1452648949 -0800
committer Nancy Chen <nancychen@google.com> 1453428158 -0800

Factor out lookup code in DefaultVoicemailNotifier.

In preparation for sharing code with the MissedCallNotifier, factor out
the potential common code into CallLogNotificationsHelper.
+ Turn CallLogNotificationsHelper into a singleton.
+ Copy over NewCallsQuery and NameLookupQuery classes.
+ If it is a voicemail with unknown number, display the string
  "unknown".

Bug: 22857261
Bug: 25020236
Change-Id: Ie181472bd4588466ec5f37c8cbacf023ba1a21c4