Add oblique as a slant.

src/ports/SkFontHost_win.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"
 #if defined(SK_BUILD_FOR_WIN32)
 
@@ skipping 2490 matching lines @@
 
     SkTypeface* onLegacyCreateTypeface(const char familyName[], SkFontStyle style) const override {
         LOGFONT lf;
         if (nullptr == familyName) {
             lf = get_default_font();
         } else {
             logfont_for_name(familyName, &lf);
         }
 
         lf.lfWeight = style.weight();
-        lf.lfItalic = style.isItalic() ? TRUE : FALSE;
+        lf.lfItalic = style.slant() == SkFontStyle::kUpright_Slant ? FALSE : TRUE;
         return SkCreateTypefaceFromLOGFONT(lf);
     }
 
 private:
     SkTDArray<ENUMLOGFONTEX> fLogFontArray;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 SkFontMgr* SkFontMgr_New_GDI() { return new SkFontMgrGDI; }
 
 #endif//defined(SK_BUILD_FOR_WIN32)