Remove FX_BOOL from xfa.

xfa/fde/cfx_chariter.cpp

 // Copyright 2016 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 "xfa/fde/cfx_chariter.h"
 
 CFX_CharIter::CFX_CharIter(const CFX_WideString& wsText)
     : m_wsText(wsText), m_nIndex(0) {
   ASSERT(!wsText.IsEmpty());
 }
 
 CFX_CharIter::~CFX_CharIter() {}
 
-FX_BOOL CFX_CharIter::Next(FX_BOOL bPrev) {
+bool CFX_CharIter::Next(bool bPrev) {
   if (bPrev) {
     if (m_nIndex <= 0)
-      return FALSE;
+      return false;
     m_nIndex--;
   } else {
     if (m_nIndex + 1 >= m_wsText.GetLength())
-      return FALSE;
+      return false;
     m_nIndex++;
   }
-  return TRUE;
+  return true;
 }
 
 FX_WCHAR CFX_CharIter::GetChar() {
   return m_wsText.GetAt(m_nIndex);
 }
 
 void CFX_CharIter::SetAt(int32_t nIndex) {
   if (nIndex < 0 || nIndex >= m_wsText.GetLength())
     return;
   m_nIndex = nIndex;
 }
 
 int32_t CFX_CharIter::GetAt() const {
   return m_nIndex;
 }
 
-FX_BOOL CFX_CharIter::IsEOF(FX_BOOL bTail) const {
+bool CFX_CharIter::IsEOF(bool bTail) const {
   return bTail ? (m_nIndex + 1 == m_wsText.GetLength()) : (m_nIndex == 0);
 }
 
 IFX_CharIter* CFX_CharIter::Clone() {
   CFX_CharIter* pIter = new CFX_CharIter(m_wsText);
   pIter->m_nIndex = m_nIndex;
   return pIter;
 }