Use stdint.h types throughout PDFium.

fpdfsdk/src/formfiller/FFL_CheckBox.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/formfiller/FormFiller.h"
 #include "../../include/formfiller/FFL_FormFiller.h"
 #include "../../include/formfiller/FFL_CheckBox.h"
 
@@ skipping 106 matching lines @@
         {
                 
                 FX_BOOL bNewChecked = pWnd->IsChecked();
                 
 
                 if (bNewChecked)
                 {
                         CPDF_FormField* pField = m_pWidget->GetFormField();
                         ASSERT(pField != NULL);
 
-                        for (FX_INT32 i=0,sz=pField->CountControls(); i<sz; i++)
+                        for (int32_t i=0,sz=pField->CountControls(); i<sz; i++)
                         {
                                 if (CPDF_FormControl* pCtrl = pField->GetControl(i))
                                 {
                                         if (pCtrl->IsChecked())
                                         {
                                                 break;
                                         }
                                 }
                         }
                 }
 
                 m_pWidget->SetCheck(bNewChecked, FALSE);
                 m_pWidget->UpdateField();
                 SetChangeMark();
         }
 
 }