Revert of Replace SkTypeface::Style with SkFontStyle.

src/core/SkFontHost.cpp

Index: src/core/SkFontHost.cpp
diff --git a/src/core/SkFontHost.cpp b/src/core/SkFontHost.cpp
index 77b80e88219e8a26efff200a03101ed18dc126ce..ce73491c7271e4fdc40a510ecf1f0671a7156eee 100644
--- a/src/core/SkFontHost.cpp
+++ b/src/core/SkFontHost.cpp
@@ -67,15 +67,6 @@
     fUnion.fR.fSlant = SkPin32(slant, kUpright_Slant, kItalic_Slant);
 }
 
-SkFontStyle::SkFontStyle(unsigned oldStyle) {
-    fUnion.fU32 = 0;
-    fUnion.fR.fWeight = (oldStyle & SkTypeface::kBold) ? SkFontStyle::kBold_Weight
-                                                       : SkFontStyle::kNormal_Weight;
-    fUnion.fR.fWidth = SkFontStyle::kNormal_Width;
-    fUnion.fR.fSlant = (oldStyle & SkTypeface::kItalic) ? SkFontStyle::kItalic_Slant
-                                                        : SkFontStyle::kUpright_Slant;
-}
-
 #include "SkFontMgr.h"
 
 class SkEmptyFontStyleSet : public SkFontStyleSet {