Add oblique as a slant.

src/ports/SkFontHost_win.cpp

Index: src/ports/SkFontHost_win.cpp
diff --git a/src/ports/SkFontHost_win.cpp b/src/ports/SkFontHost_win.cpp
index 5ded39c1b42406066697e614ca853fe6087dd5d1..db90915acae6648c938dda93c09650146c33f5b5 100644
--- a/src/ports/SkFontHost_win.cpp
+++ b/src/ports/SkFontHost_win.cpp
@@ -2508,7 +2508,7 @@ protected:
         }
 
         lf.lfWeight = style.weight();
-        lf.lfItalic = style.isItalic() ? TRUE : FALSE;
+        lf.lfItalic = style.slant() == SkFontStyle::kUpright_Slant ? FALSE : TRUE;
         return SkCreateTypefaceFromLOGFONT(lf);
     }