Mark CPDF_Font::GetAdobeCharName() as static.

Change-Id: Ib1684a0934f6c4a35d4e0581c99cf6072f316711
Reviewed-on: https://pdfium-review.googlesource.com/c/48151
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/core/fpdfapi/font/cpdf_font.cpp b/core/fpdfapi/font/cpdf_font.cpp
index a5727d7..03ade0e 100644
--- a/core/fpdfapi/font/cpdf_font.cpp
+++ b/core/fpdfapi/font/cpdf_font.cpp
@@ -345,6 +345,7 @@
   return AsType1Font()->IsBase14Font();
 }
 
+// static
 const char* CPDF_Font::GetAdobeCharName(
     int iBaseEncoding,
     const std::vector<ByteString>& charnames,
diff --git a/core/fpdfapi/font/cpdf_font.h b/core/fpdfapi/font/cpdf_font.h
index e35c696..3fd9489 100644
--- a/core/fpdfapi/font/cpdf_font.h
+++ b/core/fpdfapi/font/cpdf_font.h
@@ -93,6 +93,9 @@
 
   static int TT2PDF(int m, FXFT_Face face);
   static bool FT_UseTTCharmap(FXFT_Face face, int platform_id, int encoding_id);
+  static const char* GetAdobeCharName(int iBaseEncoding,
+                                      const std::vector<ByteString>& charnames,
+                                      int charcode);
 
   virtual bool Load() = 0;
 
@@ -100,10 +103,6 @@
   void LoadFontDescriptor(const CPDF_Dictionary* pDict);
   void CheckFontMetrics();
 
-  const char* GetAdobeCharName(int iBaseEncoding,
-                               const std::vector<ByteString>& charnames,
-                               int charcode);
-
   UnownedPtr<CPDF_Document> const m_pDocument;
   CFX_Font m_Font;
   std::vector<std::unique_ptr<CFX_Font>> m_FontFallbacks;