Fixing addresses backup/restore for SMS.
We were trying to parse "address" field in order to get the recipients
and generate threadId. Problem was that parsing went bad in some cases.
In this CL we backup sms_recipients fetched from content://mms-sms/canonical-address
and use it on restore to generate threadId.

Will fix the tests later.

Bug:26739475
Change-Id: I1b50bbdc8afbdf254d27df9d23fc938847768d41
2 files changed