[Merge to XFA] 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 c52b4fe2786907e85bb0255b11e4636cb1524499..77f7f118fccd7be7365ae4220d5a7c0d96c1e35f 100644
--- a/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
+++ b/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
@@ -745,10 +745,11 @@ 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"));
@@ -781,6 +782,7 @@ void CPDF_Font::LoadPDFEncoding(CPDF_Object* pEncoding,
     }
   }
 }
+
 FX_BOOL CPDF_Font::IsStandardFont() const {
   if (m_FontType != PDFFONT_TYPE1) {
     return FALSE;