Update safe numerics package to get bitwise ops

core/fpdfapi/parser/cpdf_hint_tables.cpp

 // Copyright 2016 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
 
 #include "core/fpdfapi/parser/cpdf_hint_tables.h"
 
 #include <limits>
 
@@ skipping 239 matching lines @@
 
   int nStreamOffset = ReadPrimaryHintStreamOffset();
   int nStreamLen = ReadPrimaryHintStreamLength();
   if (nStreamOffset < 0 || nStreamLen < 1)
     return false;
 
   FX_SAFE_UINT32 bit_offset = offset;
   bit_offset *= 8;
   if (!bit_offset.IsValid() || hStream->GetPos() > bit_offset.ValueOrDie())
     return false;
-  hStream->SkipBits(bit_offset.ValueOrDie() - hStream->GetPos());
+  hStream->SkipBits((bit_offset - hStream->GetPos()).ValueOrDie());
 
   const uint32_t kHeaderSize = 192;
   if (hStream->BitsRemaining() < kHeaderSize)
     return false;
 
   // Item 1: The object number of the first object in the shared objects
   // section.
   uint32_t dwFirstSharedObjNum = hStream->GetBits(32);
 
   // Item 2: The location of the first object in the shared objects section.
@@ skipping 232 matching lines @@
   return static_cast<int>(m_pLinearized->GetFirstPageNo());
 }
 
 int CPDF_HintTables::ReadPrimaryHintStreamOffset() const {
   return static_cast<int>(m_pLinearized->GetHintStart());
 }
 
 int CPDF_HintTables::ReadPrimaryHintStreamLength() const {
   return static_cast<int>(m_pLinearized->GetHintLength());
 }