XFA: Remove many relative includes in xfa/

xfa/src/fwl/src/lightwidget/combobox.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 <memory>
 
-#include "../../../foxitlib.h"
+#include "xfa/src/foxitlib.h"
 
 CFWL_ComboBox* CFWL_ComboBox::Create() {
   return new CFWL_ComboBox;
 }
 FWL_ERR CFWL_ComboBox::Initialize(const CFWL_WidgetProperties* pProperties) {
   if (m_pIface)
     return FWL_ERR_Indefinite;
   if (pProperties) {
     *m_pProperties = *pProperties;
   }
@@ skipping 330 matching lines @@
     IFWL_Widget* pWidget,
     FWL_HLISTITEM hItem,
     FX_DWORD dwCheckState) {
   CFWL_ComboBoxItem* pItem = reinterpret_cast<CFWL_ComboBoxItem*>(hItem);
   pItem->m_dwCheckState = dwCheckState;
   return FWL_ERR_Succeeded;
 }
 FX_FLOAT CFWL_ComboBox::CFWL_ComboBoxDP::GetListHeight(IFWL_Widget* pWidget) {
   return m_fMaxListHeight;
 }