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 5694d233e1859da7cc589d8a3dcd58a768bb92d5..bcc088a4f64a00a18645007215dfb73b94367acc 100644
--- a/core/fpdfapi/parser/cpdf_syntax_parser.h
+++ b/core/fpdfapi/parser/cpdf_syntax_parser.h
@@ -47,9 +47,6 @@ class CPDF_SyntaxParser {
                      FX_BOOL bWholeWord,
                      FX_BOOL bForward,
                      FX_FILESIZE limit);
-  int SearchMultiWord(const CFX_ByteStringC& words,
-                      FX_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();
+  FX_BOOL ReadChar(FX_FILESIZE read_pos, uint32_t read_size);
   FX_BOOL GetNextChar(uint8_t& ch);
   FX_BOOL GetCharAtBackward(FX_FILESIZE pos, uint8_t& ch);
   void GetNextWordInternal(bool* bIsNumber);