Use stdint.h types throughout PDFium.

core/src/fxcodec/jbig2/JBig2_Define.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 _JBIG2_DEFINE_H_
 #define _JBIG2_DEFINE_H_
 #include "../../../include/fxcrt/fx_system.h"
 #define JBIG2_memset    FXSYS_memset8
 #define JBIG2_memcmp    FXSYS_memcmp32
 #define JBIG2_memcpy    FXSYS_memcpy32
 #include "JBig2_Object.h"
 #define JBIG2_OOB                       1
 typedef struct {
-    FX_INT32 width,
+    int32_t width,
              height;
-    FX_INT32 x,
+    int32_t x,
              y;
-    FX_BYTE flags;
+    uint8_t flags;
 } JBig2RegionInfo;
 typedef struct {
-    FX_INT32 codelen;
-    FX_INT32 code;
+    int32_t codelen;
+    int32_t code;
 } JBig2HuffmanCode;
 extern "C" {
     void _FaxG4Decode(void *pModule, FX_LPCBYTE src_buf, FX_DWORD src_size, int* pbitpos, FX_LPBYTE dest_buf, int width, int height, int pitch = 0);
 };
 #define JBIG2_MAX_REFERRED_SEGMENT_COUNT                64
 #define JBIG2_MAX_EXPORT_SYSMBOLS                               65535
 #define JBIG2_MAX_NEW_SYSMBOLS                                  65535
 #define JBIG2_MAX_PATTERN_INDEX                                 65535
 #define JBIG2_MAX_IMAGE_SIZE                                    65535
 #endif