Add Callable URI support

This must be after I4729c87ecd11296599ed0313e8ad1f5aeabbd32b, which
introduces URIs this change depends on.

- CONTENT_URI will return a list containing both phone numbers and
  sip addresses.
- CONTENT_FILTER_URI will return a list containing both, filtered
  by a parameter. The URI will return addresses starting from
  "sip:" too just for convenience. If a user type "johndoe",
  sip addresses like "sip:johndoe@example.com" will also be returned.

Bug: 5039627
Change-Id: Ifbbfe9df3b9a560666d35ca78aeb07d513963195
3 files changed