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

fpdfsdk/fpdfdoc_unittest.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.
 
 #include "public/fpdf_doc.h"
 
 #include <memory>
 #include <vector>
 
 #include "core/fpdfapi/cpdf_modulemgr.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_document.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_name.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_number.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_parser.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_reference.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_string.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/test_support.h"
+#include "third_party/base/ptr_util.h"
 
 #ifdef PDF_ENABLE_XFA
 #include "fpdfsdk/fpdfxfa/fpdfxfa_app.h"
 #include "fpdfsdk/fpdfxfa/fpdfxfa_doc.h"
 #endif  // PDF_ENABLE_XFA
 
 class CPDF_TestDocument : public CPDF_Document {
  public:
   CPDF_TestDocument() : CPDF_Document(std::unique_ptr<CPDF_Parser>()) {}
 
   void SetRoot(CPDF_Dictionary* root) { m_pRootDict = root; }
   CPDF_IndirectObjectHolder* GetHolder() { return this; }
 };
 
 #ifdef PDF_ENABLE_XFA
 class CPDF_TestXFADocument : public CPDFXFA_Document {
  public:
   CPDF_TestXFADocument()
-      : CPDFXFA_Document(WrapUnique(new CPDF_TestDocument()),
+      : CPDFXFA_Document(pdfium::MakeUnique<CPDF_TestDocument>(),
                          CPDFXFA_App::GetInstance()) {}
 
   void SetRoot(CPDF_Dictionary* root) {
     reinterpret_cast<CPDF_TestDocument*>(GetPDFDoc())->SetRoot(root);
   }
 
   CPDF_IndirectObjectHolder* GetHolder() { return GetPDFDoc(); }
 };
 using CPDF_TestPdfDocument = CPDF_TestXFADocument;
 #else   // PDF_ENABLE_XFA
 using CPDF_TestPdfDocument = CPDF_TestDocument;
 #endif  // PDF_ENABLE_XFA
 
 class PDFDocTest : public testing::Test {
  public:
   struct DictObjInfo {
     uint32_t num;
     CPDF_Dictionary* obj;
   };
 
   void SetUp() override {
     // We don't need page module or render module, but
     // initialize them to keep the code sane.
     CPDF_ModuleMgr* module_mgr = CPDF_ModuleMgr::Get();
     module_mgr->InitPageModule();
 
-    m_pDoc = WrapUnique(new CPDF_TestPdfDocument());
+    m_pDoc = pdfium::MakeUnique<CPDF_TestPdfDocument>();
     m_pIndirectObjs = m_pDoc->GetHolder();
     // Setup the root directory.
     m_pRootObj.reset(new CPDF_Dictionary());
     m_pDoc->SetRoot(m_pRootObj.get());
   }
 
   void TearDown() override {
     m_pRootObj.reset();
     m_pIndirectObjs = nullptr;
     m_pDoc.reset();
@@ skipping 149 matching lines @@
     // Title with no match.
     std::unique_ptr<unsigned short, pdfium::FreeDeleter> title =
         GetFPDFWideString(L"Chapter 8");
     EXPECT_EQ(nullptr, FPDFBookmark_Find(m_pDoc.get(), title.get()));
 
     // Title with a match.
     title = GetFPDFWideString(L"Chapter 3");
     EXPECT_EQ(bookmarks[3].obj, FPDFBookmark_Find(m_pDoc.get(), title.get()));
   }
 }