Use stdint.h types throughout PDFium.

core/src/fxcrt/fx_unicode.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 "../../include/fxcrt/fx_ext.h"
 extern const FX_DWORD gs_FX_TextLayout_CodeProperties[65536];
 extern const FX_WCHAR gs_FX_TextLayout_VerticalMirror[64];
 extern const FX_WCHAR gs_FX_TextLayout_BidiMirror[512];
@@ skipping 11 matching lines @@
     return (gs_FX_TextLayout_CodeProperties[(FX_WORD)ch] & 0x8000) != 0;
 }
 FX_BOOL FX_IsCombinationChar(FX_WCHAR wch)
 {
     FX_DWORD dwProps = (gs_FX_TextLayout_CodeProperties[(FX_WORD)wch] & FX_CHARTYPEBITSMASK);
     return dwProps == FX_CHARTYPE_Combination;
 }
 FX_BOOL FX_IsBidiChar(FX_WCHAR wch)
 {
     FX_DWORD dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
-    FX_INT32 iBidiCls = (dwProps & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS;
+    int32_t iBidiCls = (dwProps & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS;
     return (FX_BIDICLASS_R == iBidiCls || FX_BIDICLASS_AL == iBidiCls);
 }
 FX_WCHAR FX_GetMirrorChar(FX_WCHAR wch, FX_BOOL bRTL, FX_BOOL bVertical)
 {
     FX_DWORD dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
     FX_DWORD dwTemp = (dwProps & 0xFF800000);
     if (bRTL && dwTemp < 0xFF800000) {
         wch = gs_FX_TextLayout_BidiMirror[dwTemp >> 23];
         dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
     }
@@ skipping 13 matching lines @@
         dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
     }
     if (bVertical) {
         dwTemp = (dwProps & 0x007E0000);
         if (dwTemp < 0x007E0000) {
             wch = gs_FX_TextLayout_VerticalMirror[dwTemp >> 17];
         }
     }
     return wch;
 }