Make SkAdvancedTypefaceMetrics private.

src/ports/SkTypeface_win_dw.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkTypeface_win_dw_DEFINED
 #define SkTypeface_win_dw_DEFINED
 
@@ skipping 81 matching lines @@
             HRV(fFactory->UnregisterFontFileLoader(fDWriteFontFileLoader.get()));
         }
 
         //SkTypefaceCache::Remove(this);
         INHERITED::weak_dispose();
     }
 
     SkStreamAsset* onOpenStream(int* ttcIndex) const override;
     SkScalerContext* onCreateScalerContext(const SkDescriptor*) const override;
     void onFilterRec(SkScalerContextRec*) const override;
-    virtual SkAdvancedTypefaceMetrics* onGetAdvancedTypefaceMetrics(
-                                SkAdvancedTypefaceMetrics::PerGlyphInfo,
-                                const uint32_t*, uint32_t) const override;
+    SkAdvancedTypefaceMetrics* onGetAdvancedTypefaceMetrics(
+                                PerGlyphInfo, const uint32_t*, uint32_t) const override;
     void onGetFontDescriptor(SkFontDescriptor*, bool*) const override;
     virtual int onCharsToGlyphs(const void* chars, Encoding encoding,
                                 uint16_t glyphs[], int glyphCount) const override;
     int onCountGlyphs() const override;
     int onGetUPEM() const override;
     void onGetFamilyName(SkString* familyName) const override;
     SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override;
     int onGetTableTags(SkFontTableTag tags[]) const override;
     virtual size_t onGetTableData(SkFontTableTag, size_t offset,
                                   size_t length, void* data) const override;
 
 private:
     typedef SkTypeface INHERITED;
 };
 
 #endif