Add fallback fonts in pdfium

core/fpdfapi/fpdf_font/include/cpdf_font.h

Index: core/fpdfapi/fpdf_font/include/cpdf_font.h
diff --git a/core/fpdfapi/fpdf_font/include/cpdf_font.h b/core/fpdfapi/fpdf_font/include/cpdf_font.h
index a76a6a25734eb7005b65734f3deda31fb1dae285..3293b3b94756e6e9a7d4ea10a32aea93ab172158 100644
--- a/core/fpdfapi/fpdf_font/include/cpdf_font.h
+++ b/core/fpdfapi/fpdf_font/include/cpdf_font.h
@@ -71,6 +71,10 @@ class CPDF_Font {
   virtual int GlyphFromCharCodeExt(uint32_t charcode);
   virtual CFX_WideString UnicodeFromCharCode(uint32_t charcode) const;
   virtual uint32_t CharCodeFromUnicode(FX_WCHAR Unicode) const;
+  uint32_t FallbackFontFromCharcode(uint32_t charcode, bool* pVertGlyph);

[Lei Zhang, 2016/08/24 04:43:11]

Keep these separate from the virtual methods?

[npm, 2016/08/24 14:39:22]

Done.

+  int FallbackGlyphFromCharcode(int fallbackFont,
+                                uint32_t charcode,
+                                bool* pVertGlyph);
 
   const CFX_ByteString& GetBaseFont() const { return m_BaseFont; }
   CFX_SubstFont* GetSubstFont() const { return m_Font.GetSubstFont(); }
@@ -94,6 +98,7 @@ class CPDF_Font {
 
   CPDF_Document* m_pDocument;
   CFX_Font m_Font;
+  std::vector<std::unique_ptr<CFX_Font>> m_FontFallbacks;
 
  protected:
   CPDF_Font();