Remove FX_DWORD from fpdfsdk/ and testing/

fpdfsdk/pdfwindow/PWL_SpecialButton.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 "fpdfsdk/pdfwindow/PWL_Button.h"
 #include "fpdfsdk/pdfwindow/PWL_SpecialButton.h"
 #include "fpdfsdk/pdfwindow/PWL_Utils.h"
 #include "fpdfsdk/pdfwindow/PWL_Wnd.h"
@@ skipping 20 matching lines @@
 
 void CPWL_CheckBox::SetCheck(bool bCheck) {
   m_bChecked = bCheck;
 }
 
 bool CPWL_CheckBox::IsChecked() const {
   return m_bChecked;
 }
 
 FX_BOOL CPWL_CheckBox::OnLButtonUp(const CFX_FloatPoint& point,
-                                   FX_DWORD nFlag) {
+                                   uint32_t nFlag) {
   if (IsReadOnly())
     return FALSE;
 
   SetCheck(!IsChecked());
   return TRUE;
 }
 
-FX_BOOL CPWL_CheckBox::OnChar(uint16_t nChar, FX_DWORD nFlag) {
+FX_BOOL CPWL_CheckBox::OnChar(uint16_t nChar, uint32_t nFlag) {
   SetCheck(!IsChecked());
   return TRUE;
 }
 
 CPWL_RadioButton::CPWL_RadioButton() : m_bChecked(false) {}
 
 CPWL_RadioButton::~CPWL_RadioButton() {}
 
 CFX_ByteString CPWL_RadioButton::GetClassName() const {
   return "CPWL_RadioButton";
 }
 
 FX_BOOL CPWL_RadioButton::OnLButtonUp(const CFX_FloatPoint& point,
-                                      FX_DWORD nFlag) {
+                                      uint32_t nFlag) {
   if (IsReadOnly())
     return FALSE;
 
   SetCheck(TRUE);
   return TRUE;
 }
 
 void CPWL_RadioButton::SetCheck(bool bCheck) {
   m_bChecked = bCheck;
 }
 
 bool CPWL_RadioButton::IsChecked() const {
   return m_bChecked;
 }
 
-FX_BOOL CPWL_RadioButton::OnChar(uint16_t nChar, FX_DWORD nFlag) {
+FX_BOOL CPWL_RadioButton::OnChar(uint16_t nChar, uint32_t nFlag) {
   SetCheck(TRUE);
   return TRUE;
 }