Simplify getting baseline from Pango.
Simplify getting baseline from Pango.

jasco/WeasyPrint,marclaporte/WeasyPrint,prepare/TestWeasyPrint,andrewleech/WeasyPrint,marclaporte/WeasyPrint,Kozea/WeasyPrint,prepare/TestWeasyPrint,jasco/WeasyPrint,andrewleech/WeasyPrint,Kozea/WeasyPrint