Clean up CPDF_SyntaxParser a little bit

core/fpdfapi/parser/cpdf_syntax_parser.h

Index: core/fpdfapi/parser/cpdf_syntax_parser.h
diff --git a/core/fpdfapi/parser/cpdf_syntax_parser.h b/core/fpdfapi/parser/cpdf_syntax_parser.h
index eae5a00a41fbfc01c01859a1dfcd0fab8e8f5614..6086cf39e126593ce864fe0e6db4b219c5b2ecc4 100644
--- a/core/fpdfapi/parser/cpdf_syntax_parser.h
+++ b/core/fpdfapi/parser/cpdf_syntax_parser.h
@@ -47,9 +47,6 @@ class CPDF_SyntaxParser {
                   bool bWholeWord,
                   bool bForward,
                   FX_FILESIZE limit);
-  int SearchMultiWord(const CFX_ByteStringC& words,
-                      bool bWholeWord,
-                      FX_FILESIZE limit);
   FX_FILESIZE FindTag(const CFX_ByteStringC& tag, FX_FILESIZE limit);
 
   void SetEncrypt(std::unique_ptr<CPDF_CryptoHandler> pCryptoHandler);
@@ -67,6 +64,7 @@ class CPDF_SyntaxParser {
   static int s_CurrentRecursionDepth;
 
   uint32_t GetDirectNum();
+  bool ReadChar(FX_FILESIZE read_pos, uint32_t read_size);
   bool GetNextChar(uint8_t& ch);
   bool GetCharAtBackward(FX_FILESIZE pos, uint8_t& ch);
   void GetNextWordInternal(bool* bIsNumber);