Revert "Revert "Add type cast definitions for CPDF_Dictionary.""

core/src/fpdfapi/fpdf_font/fpdf_font.cpp

Index: core/src/fpdfapi/fpdf_font/fpdf_font.cpp
diff --git a/core/src/fpdfapi/fpdf_font/fpdf_font.cpp b/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
index 7a57889a35f4d51411a2d106a8cfe3e2242aa523..10ca3113e3e5c9fb53b170f1a8b650d3d3b6052e 100644
--- a/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
+++ b/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
@@ -746,10 +746,11 @@ void CPDF_Font::LoadPDFEncoding(CPDF_Object* pEncoding,
     GetPredefinedEncoding(iBaseEncoding, bsEncoding);
     return;
   }
-  if (pEncoding->GetType() != PDFOBJ_DICTIONARY) {
+
+  CPDF_Dictionary* pDict = pEncoding->AsDictionary();
+  if (!pDict)
     return;
-  }
-  CPDF_Dictionary* pDict = (CPDF_Dictionary*)pEncoding;
+
   if (iBaseEncoding != PDFFONT_ENCODING_ADOBE_SYMBOL &&
       iBaseEncoding != PDFFONT_ENCODING_ZAPFDINGBATS) {
     CFX_ByteString bsEncoding = pDict->GetString(FX_BSTRC("BaseEncoding"));
@@ -782,6 +783,7 @@ void CPDF_Font::LoadPDFEncoding(CPDF_Object* pEncoding,
     }
   }
 }
+
 FX_BOOL CPDF_Font::IsStandardFont() const {
   if (m_FontType != PDFFONT_TYPE1)
     return FALSE;