Add ptr_util.h from base until std::make_unique<> available

core/fpdfapi/fpdf_parser/cpdf_document.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/fpdfapi/fpdf_parser/cpdf_document.h"
 
 #include <memory>
 #include <set>
 #include <vector>
 
 #include "core/fpdfapi/cpdf_modulemgr.h"
 #include "core/fpdfapi/fpdf_font/cpdf_fontencoding.h"
 #include "core/fpdfapi/fpdf_page/cpdf_pagemodule.h"
 #include "core/fpdfapi/fpdf_page/pageint.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_dictionary.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_parser.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_reference.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_stream.h"
 #include "core/fpdfapi/fpdf_render/render_int.h"
 #include "core/fxcodec/JBig2_DocumentContext.h"
 #include "core/fxge/cfx_unicodeencoding.h"
 #include "core/fxge/fx_font.h"
+#include "third_party/base/ptr_util.h"
 #include "third_party/base/stl_util.h"
 
 namespace {
 
 const int FX_MAX_PAGE_LEVEL = 1024;
 
 const uint16_t g_FX_CP874Unicodes[128] = {
     0x20AC, 0x0000, 0x0000, 0x0000, 0x0000, 0x2026, 0x0000, 0x0000, 0x0000,
     0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x2018,
     0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x0000, 0x0000, 0x0000,
@@ skipping 372 matching lines @@
 CPDF_Document::CPDF_Document(std::unique_ptr<CPDF_Parser> pParser)
     : CPDF_IndirectObjectHolder(),
       m_pParser(std::move(pParser)),
       m_pRootDict(nullptr),
       m_pInfoDict(nullptr),
       m_bLinearized(false),
       m_iFirstPageNo(0),
       m_dwFirstPageObjNum(0),
       m_pDocPage(new CPDF_DocPageData(this)),
       m_pDocRender(new CPDF_DocRenderData(this)),
-      m_pByteStringPool(WrapUnique(new CFX_ByteStringPool)) {
+      m_pByteStringPool(pdfium::MakeUnique<CFX_ByteStringPool>()) {
   if (pParser)
     SetLastObjNum(m_pParser->GetLastObjNum());
 }
 
 CPDF_Document::~CPDF_Document() {
   delete m_pDocPage;
   CPDF_ModuleMgr::Get()->GetPageModule()->ClearStockFont(this);
   m_pByteStringPool.Clear();  // Make weak.
 }
 
@@ skipping 581 matching lines @@
                         pBBox, pLogFont->lfWeight / 5);
   pFontDesc->SetIntegerFor("CapHeight", capheight);
   pFontDict->SetReferenceFor("FontDescriptor", this,
                              AddIndirectObject(pFontDesc));
   hFont = SelectObject(hDC, hFont);
   DeleteObject(hFont);
   DeleteDC(hDC);
   return LoadFont(pBaseDict);
 }
 #endif  //  _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_