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

fpdfsdk/cpdfsdk_pageview.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 "fpdfsdk/cpdfsdk_pageview.h"
 
 #include <memory>
 #include <vector>
 
 #include "core/fpdfapi/fpdf_parser/cpdf_document.h"
 #include "core/fpdfapi/fpdf_render/cpdf_renderoptions.h"
 #include "core/fpdfdoc/cpdf_annotlist.h"
 #include "core/fpdfdoc/cpdf_interform.h"
 #include "fpdfsdk/cpdfsdk_annot.h"
 #include "fpdfsdk/cpdfsdk_annothandlermgr.h"
 #include "fpdfsdk/cpdfsdk_annotiterator.h"
 #include "fpdfsdk/cpdfsdk_environment.h"
 #include "fpdfsdk/cpdfsdk_interform.h"
+#include "third_party/base/ptr_util.h"
 
 #ifdef PDF_ENABLE_XFA
 #include "fpdfsdk/fpdfxfa/fpdfxfa_page.h"
 #include "xfa/fxfa/xfa_ffdocview.h"
 #include "xfa/fxfa/xfa_ffpageview.h"
 #include "xfa/fxfa/xfa_ffwidgethandler.h"
 #include "xfa/fxfa/xfa_rendercontext.h"
 #include "xfa/fxgraphics/cfx_graphics.h"
 #endif  // PDF_ENABLE_XFA
 
@@ skipping 456 matching lines @@
     SetLock(FALSE);
     return;
   }
 #endif  // PDF_ENABLE_XFA
 
   CPDF_Page* pPage = GetPDFPage();
   ASSERT(pPage);
   bool bUpdateAP = CPDF_InterForm::IsUpdateAPEnabled();
   // Disable the default AP construction.
   CPDF_InterForm::SetUpdateAP(false);
-  m_pAnnotList = WrapUnique(new CPDF_AnnotList(pPage));
+  m_pAnnotList = pdfium::MakeUnique<CPDF_AnnotList>(pPage);
   CPDF_InterForm::SetUpdateAP(bUpdateAP);
 
   const size_t nCount = m_pAnnotList->Count();
   for (size_t i = 0; i < nCount; ++i) {
     CPDF_Annot* pPDFAnnot = m_pAnnotList->GetAt(i);
     CheckUnSupportAnnot(GetPDFDocument(), pPDFAnnot);
     CPDFSDK_Annot* pAnnot = pAnnotHandlerMgr->NewAnnot(pPDFAnnot, this);
     if (!pAnnot)
       continue;
     m_fxAnnotArray.push_back(pAnnot);
@@ skipping 74 matching lines @@
       return pAnnot;
   }
   return nullptr;
 }
 
 int CPDFSDK_PageView::GetPageIndexForStaticPDF() const {
   CPDF_Dictionary* pDict = GetPDFPage()->m_pFormDict;
   CPDF_Document* pDoc = m_pSDKDoc->GetPDFDocument();
   return (pDoc && pDict) ? pDoc->GetPageIndex(pDict->GetObjNum()) : -1;
 }