[FreeType] Always use MONO hinting when hinting in monochrome.

This matches the behaviour of Cairo. It appears to be an undocumented
trick of font rendering on Linux that, in monochrome, all the hinting
modes expect no-hinting are mapped to FreeType's MONO hinting.

http://code.google.com/p/chromium/issues/detail?id=43252

http://codereview.appspot.com/1162041/show

git-svn-id: http://skia.googlecode.com/svn/trunk@562 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed