Begin switch to SkFontStyle for legacy calls.

src/ports/SkFontHost_mac.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkTypes.h"  // Keep this before any #ifdef ...
 #if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
 
@@ skipping 2554 matching lines @@
     }
 
     SkTypeface* onCreateFromFile(const char path[], int ttcIndex) const override {
         AutoCFRelease<CGDataProviderRef> pr(CGDataProviderCreateWithFilename(path));
         if (nullptr == pr) {
             return nullptr;
         }
         return create_from_dataProvider(pr);
     }
 
-    virtual SkTypeface* onLegacyCreateTypeface(const char familyName[],
-                                               unsigned styleBits) const override {
-
-        SkFontStyle style = SkFontStyle((SkTypeface::Style)styleBits);
+#ifdef SK_VERY_LEGACY_CREATE_TYPEFACE
+    SkTypeface* onLegacyCreateTypeface(const char familyName[], unsigned styleBits) const override {
+        SkFontStyle style = SkFontStyle::FromOldStyle(styleBits);
+#else
+    SkTypeface* onLegacyCreateTypeface(const char familyName[], SkFontStyle style) const override {
+#endif
         if (familyName) {
             familyName = map_css_names(familyName);
         }
 
         if (!familyName || !*familyName) {
             familyName = FONT_DEFAULT_NAME;
         }
 
         SkTypeface* face = NewFromName(familyName, style);
         if (face) {
             return face;
         }
 
         return SkSafeRef(GetDefaultFace());
     }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 SkFontMgr* SkFontMgr::Factory() { return new SkFontMgr_Mac; }
 
 #endif//defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)