Handle DATA in ContactsProvider2.getType().

(I noticed this was missing because I saw IllegalArgumentExceptions in the
logs when doing caller-id lookups for SIP addresses, which happen directly
on the Data table.)

It is valid to call getType on a DATA uri, though, so we now return
Data.CONTENT_TYPE.

Bug: 3004127
Change-Id: I14538cd8671e2f47acedddd79c18bd2ce4709a8f
1 file changed