SkPDF: add `final` keyword to leaf classes

src/pdf/SkPDFFontImpl.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkPDFFontImpl_DEFINED
 #define SkPDFFontImpl_DEFINED
 
 #include "SkPDFFont.h"
 
-class SkPDFType0Font : public SkPDFFont {
+class SkPDFType0Font final : public SkPDFFont {
 public:
     virtual ~SkPDFType0Font();
     bool multiByteGlyphs() const override { return true; }
     SkPDFFont* getFontSubset(const SkPDFGlyphSet* usage) override;
 #ifdef SK_DEBUG
     void emitObject(SkWStream*,
                     const SkPDFObjNumMap&,
                     const SkPDFSubstituteMap&) const override;
 #endif
 
 private:
     friend class SkPDFFont;  // to access the constructor
 #ifdef SK_DEBUG
     bool fPopulated;
     typedef SkPDFDict INHERITED;
 #endif
 
     SkPDFType0Font(const SkAdvancedTypefaceMetrics* info,
                    SkTypeface* typeface);
 
     bool populate(const SkPDFGlyphSet* subset);
 };
 
-class SkPDFCIDFont : public SkPDFFont {
+class SkPDFCIDFont final : public SkPDFFont {
 public:
     virtual ~SkPDFCIDFont();
     virtual bool multiByteGlyphs() const { return true; }
 
 private:
     friend class SkPDFType0Font;  // to access the constructor
 
     SkPDFCIDFont(const SkAdvancedTypefaceMetrics* info,
                  SkTypeface* typeface,
                  const SkPDFGlyphSet* subset);
 
     bool populate(const SkPDFGlyphSet* subset);
     bool addFontDescriptor(int16_t defaultWidth,
                            const SkTDArray<uint32_t>* subset);
 };
 
-class SkPDFType1Font : public SkPDFFont {
+class SkPDFType1Font final : public SkPDFFont {
 public:
     virtual ~SkPDFType1Font();
     virtual bool multiByteGlyphs() const { return false; }
 
 private:
     friend class SkPDFFont;  // to access the constructor
 
     SkPDFType1Font(const SkAdvancedTypefaceMetrics* info,
                    SkTypeface* typeface,
                    uint16_t glyphID,
                    SkPDFDict* relatedFontDescriptor);
 
     bool populate(int16_t glyphID);
     bool addFontDescriptor(int16_t defaultWidth);
     void addWidthInfoFromRange(int16_t defaultWidth,
         const SkAdvancedTypefaceMetrics::WidthRange* widthRangeEntry);
 };
 
-class SkPDFType3Font : public SkPDFFont {
+class SkPDFType3Font final : public SkPDFFont {
 public:
     virtual ~SkPDFType3Font();
     virtual bool multiByteGlyphs() const { return false; }
 
 private:
     friend class SkPDFFont;  // to access the constructor
 
     SkPDFType3Font(const SkAdvancedTypefaceMetrics* info,
                    SkTypeface* typeface,
                    uint16_t glyphID);
 
     bool populate(uint16_t glyphID);
 };
 
 #endif