Remove FX_DWORD from core/ and delete definition

core/fpdfdoc/doc_link.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 "core/include/fpdfdoc/fpdf_doc.h"
 
 #include <vector>
 
 #include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 
 CPDF_LinkList::CPDF_LinkList() {}
 
 CPDF_LinkList::~CPDF_LinkList() {}
 
 const std::vector<CPDF_Dictionary*>* CPDF_LinkList::GetPageLinks(
     CPDF_Page* pPage) {
-  FX_DWORD objnum = pPage->m_pFormDict->GetObjNum();
+  uint32_t objnum = pPage->m_pFormDict->GetObjNum();
   if (objnum == 0)
     return nullptr;
 
   auto it = m_PageMap.find(objnum);
   if (it != m_PageMap.end())
     return &it->second;
 
   // std::map::operator[] forces the creation of a map entry.
   std::vector<CPDF_Dictionary*>& page_link_list = m_PageMap[objnum];
   LoadPageLinks(pPage, &page_link_list);
@@ skipping 25 matching lines @@
   }
   return CPDF_Link();
 }
 
 void CPDF_LinkList::LoadPageLinks(CPDF_Page* pPage,
                                   std::vector<CPDF_Dictionary*>* pList) {
   CPDF_Array* pAnnotList = pPage->m_pFormDict->GetArrayBy("Annots");
   if (!pAnnotList)
     return;
 
-  for (FX_DWORD i = 0; i < pAnnotList->GetCount(); ++i) {
+  for (uint32_t i = 0; i < pAnnotList->GetCount(); ++i) {
     CPDF_Dictionary* pAnnot = pAnnotList->GetDictAt(i);
     bool add_link = (pAnnot && pAnnot->GetStringBy("Subtype") == "Link");
     // Add non-links as nullptrs to preserve z-order.
     pList->push_back(add_link ? pAnnot : nullptr);
   }
 }
 
 CFX_FloatRect CPDF_Link::GetRect() {
   return m_pDict->GetRectBy("Rect");
 }
 CPDF_Dest CPDF_Link::GetDest(CPDF_Document* pDoc) {
   CPDF_Object* pDest = m_pDict->GetElementValue("Dest");
   if (!pDest)
     return CPDF_Dest();
 
   if (pDest->IsString() || pDest->IsName()) {
     CPDF_NameTree name_tree(pDoc, "Dests");
     CFX_ByteStringC name = pDest->GetString();
     return CPDF_Dest(name_tree.LookupNamedDest(pDoc, name));
   }
   if (CPDF_Array* pArray = pDest->AsArray())
     return CPDF_Dest(pArray);
   return CPDF_Dest();
 }
 CPDF_Action CPDF_Link::GetAction() {
   return CPDF_Action(m_pDict->GetDictBy("A"));
 }