Remove some WrapUnique() calls by returing unique_ptrs

core/fpdfapi/font/cpdf_fontencoding.h

 // 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
 
 #ifndef CORE_FPDFAPI_FONT_CPDF_FONTENCODING_H_
 #define CORE_FPDFAPI_FONT_CPDF_FONTENCODING_H_
 
+#include <memory>
+
 #include "core/fxcrt/cfx_string_pool_template.h"
 #include "core/fxcrt/cfx_weak_ptr.h"
 #include "core/fxcrt/fx_string.h"
 
 #define PDFFONT_ENCODING_BUILTIN 0
 #define PDFFONT_ENCODING_WINANSI 1
 #define PDFFONT_ENCODING_MACROMAN 2
 #define PDFFONT_ENCODING_MACEXPERT 3
 #define PDFFONT_ENCODING_STANDARD 4
 #define PDFFONT_ENCODING_ADOBE_SYMBOL 5
@@ skipping 25 matching lines @@
 
   FX_WCHAR UnicodeFromCharCode(uint8_t charcode) const {
     return m_Unicodes[charcode];
   }
   int CharCodeFromUnicode(FX_WCHAR unicode) const;
 
   void SetUnicode(uint8_t charcode, FX_WCHAR unicode) {
     m_Unicodes[charcode] = unicode;
   }
 
-  CPDF_Object* Realize(CFX_WeakPtr<CFX_ByteStringPool> pPool);
+  std::unique_ptr<CPDF_Object> Realize(CFX_WeakPtr<CFX_ByteStringPool> pPool);
 
  public:
   FX_WCHAR m_Unicodes[256];
 };
 
 #endif  // CORE_FPDFAPI_FONT_CPDF_FONTENCODING_H_