Return unique_ptr<> from IPDF_StructTree

core/fpdfdoc/fpdf_tagged.h

 // 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
 
 #ifndef CORE_FPDFDOC_FPDF_TAGGED_H_
 #define CORE_FPDFDOC_FPDF_TAGGED_H_
 
+#include <memory>
+
 #include "core/fxge/fx_dib.h"
 
 class CPDF_Dictionary;
 class CPDF_Document;
 class IPDF_StructElement;
 
 class IPDF_StructTree {
  public:
-  static IPDF_StructTree* LoadDoc(const CPDF_Document* pDoc);
-  static IPDF_StructTree* LoadPage(const CPDF_Document* pDoc,
-                                   const CPDF_Dictionary* pPageDict);
+  static std::unique_ptr<IPDF_StructTree> LoadPage(
+      const CPDF_Document* pDoc,
+      const CPDF_Dictionary* pPageDict);
 
   virtual ~IPDF_StructTree() {}
 
   virtual int CountTopElements() const = 0;
   virtual IPDF_StructElement* GetTopElement(int i) const = 0;
 };
 
 struct CPDF_StructKid {
   enum { Invalid, Element, PageContent, StreamContent, Object } m_Type;
 
@@ skipping 53 matching lines @@
                              int subindex = -1) = 0;
 
   virtual int GetInteger(const CFX_ByteStringC& owner,
                          const CFX_ByteStringC& name,
                          int default_value,
                          bool bInheritable = false,
                          int subindex = -1) = 0;
 };
 
 #endif  // CORE_FPDFDOC_FPDF_TAGGED_H_