Fix hint table loading issues.

core/include/fxcrt/fx_basic.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_INCLUDE_FXCRT_FX_BASIC_H_
 #define CORE_INCLUDE_FXCRT_FX_BASIC_H_
 
 #include "fx_memory.h"
@@ skipping 793 matching lines @@
   FX_DWORD GetBits(FX_DWORD nBits);
 
   void ByteAlign();
 
   FX_BOOL IsEOF() { return m_BitPos >= m_BitSize; }
 
   void SkipBits(FX_DWORD nBits) { m_BitPos += nBits; }
 
   void Rewind() { m_BitPos = 0; }
 
+  FX_DWORD GetPos() const { return m_BitPos; }
+
+  FX_DWORD BitsRemaining() const {
+    return m_BitSize >= m_BitPos ? m_BitSize - m_BitPos : 0;
+  }
+
  protected:
   FX_DWORD m_BitPos;
 
   FX_DWORD m_BitSize;
 
   const uint8_t* m_pData;
 };
 template <class ObjClass>
 class CFX_CountRef {
  public:
@@ skipping 311 matching lines @@
   FX_FLOAT c;
   FX_FLOAT d;
   FX_FLOAT e;
   FX_FLOAT f;
   FX_FLOAT g;
   FX_FLOAT h;
   FX_FLOAT i;
 };
 
 #endif  // CORE_INCLUDE_FXCRT_FX_BASIC_H_