Use stdint.h types throughout PDFium.

core/src/reflow/autoreflow.cpp

 // 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
 
 #include "autoreflow.h"
 #define approachto(a,b,c) (FXSYS_fabs((float)((a)-(b)))>(c) ? 0 : 1)
 int FPDF_ProcessInterObj(const CPDF_PageObject* pPrevObj, const CPDF_PageObject* pObj)
 {
@@ skipping 397 matching lines @@
             i--;
             count--;
         } else {
             plastCell = pCell;
         }
     }
 }
 void CPDF_AutoReflowLayoutProvider::ProcessObj(CFX_PtrArray& cellArray, CPDF_PageObject* pObj, CFX_AffineMatrix matrix)
 {
 }
-FX_INT32 CPDF_AutoReflowLayoutProvider::LogicPreObj(CPDF_PageObject* pObj)
+int32_t CPDF_AutoReflowLayoutProvider::LogicPreObj(CPDF_PageObject* pObj)
 {
     CPDF_PageObject* pPreObj = m_pPreObj;
     m_pPreObj = pObj;
     if(!pPreObj) {
         return 0;
     }
     if(pPreObj->m_Type != pObj->m_Type) {
         return 0;
     }
     CFX_FloatRect rcCurObj(pObj->m_Left, pObj->m_Bottom, pObj->m_Right, pObj->m_Top);
@@ skipping 339 matching lines @@
                 pTextObj->GetItemInfo(i + 1, &Item);
                 return Item.m_OriginX;
             }
         }
         return Item.m_OriginX;
     }
     CFX_AffineMatrix matrix;
     FX_RECT rect = pObj->GetBBox(&matrix);
     return (FX_FLOAT)(rect.Width());
 }