Improve hint table validation checks.

core/fpdfapi/fpdf_page/pageint.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef CORE_FPDFAPI_FPDF_PAGE_PAGEINT_H_
 #define CORE_FPDFAPI_FPDF_PAGE_PAGEINT_H_
 
 #include <map>
@@ skipping 69 matching lines @@
  private:
   bool PositionIsInBounds() const;
 };
 
 #define PARAM_BUF_SIZE 16
 struct ContentParam {
   enum Type { OBJECT = 0, NUMBER, NAME };
   Type m_Type;
   union {
     struct {
-      FX_BOOL m_bInteger;
+      bool m_bInteger;
       union {
         int m_Integer;
         FX_FLOAT m_Float;
       };
     } m_Number;
     CPDF_Object* m_pObject;
     struct {
       int m_Len;
       char m_Buffer[32];
     } m_Name;
@@ skipping 452 matching lines @@
 };
 
 CFX_ByteStringC PDF_FindKeyAbbreviationForTesting(const CFX_ByteStringC& abbr);
 CFX_ByteStringC PDF_FindValueAbbreviationForTesting(
     const CFX_ByteStringC& abbr);
 
 void PDF_ReplaceAbbr(CPDF_Object* pObj);
 bool IsPathOperator(const uint8_t* buf, size_t len);
 
 #endif  // CORE_FPDFAPI_FPDF_PAGE_PAGEINT_H_