Move to SkDataTable::MakeXXX and sk_sp.

Change SkDataTable::NewXXX to SkDataTable::MakeXXX and return sk_sp.
This updates users of SkDataTable to sk_sp as well.
There do not appear to be any external users of these methods.

Review-Url: https://codereview.chromium.org/2211143002
12 files changed