Switch from nonstd::unique_ptr to std::unique_ptr.

core/src/fxcodec/codec/codec_int.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_SRC_FXCODEC_CODEC_CODEC_INT_H_
 #define CORE_SRC_FXCODEC_CODEC_CODEC_INT_H_
 
 #include <limits.h>
+
 #include <list>
 #include <map>
+#include <memory>
 
 #include "core/include/fxcodec/fx_codec.h"
 #include "core/src/fxcodec/jbig2/JBig2_Context.h"
-#include "third_party/base/nonstd_unique_ptr.h"
 #include "third_party/libopenjpeg20/openjpeg.h"  // For OPJ_SIZE_T.
 
 class CFX_IccProfileCache;
 class CFX_IccTransformCache;
 
 class CCodec_BasicModule : public ICodec_BasicModule {
  public:
   // ICodec_BasicModule:
   FX_BOOL RunLengthEncode(const uint8_t* src_buf,
                           FX_DWORD src_size,
@@ skipping 43 matching lines @@
       return width == m_Width && height == m_Height;
     }
 
    private:
     bool IsValid() const { return m_Data.get() != nullptr; }
 
     const int m_Width;
     const int m_Height;
     const FX_DWORD m_Pitch;
     int m_nCachedLines;
-    nonstd::unique_ptr<uint8_t, FxFreeDeleter> m_Data;
+    std::unique_ptr<uint8_t, FxFreeDeleter> m_Data;
   };
 
   virtual FX_BOOL v_Rewind() = 0;
   virtual uint8_t* v_GetNextLine() = 0;
   virtual void v_DownScale(int dest_width, int dest_height) = 0;
 
   uint8_t* ReadNextLine();
 
   int m_OrigWidth;
   int m_OrigHeight;
   int m_DownScale;
   int m_OutputWidth;
   int m_OutputHeight;
   int m_nComps;
   int m_bpc;
   FX_DWORD m_Pitch;
   FX_BOOL m_bColorTransformed;
   int m_NextLine;
   uint8_t* m_pLastScanline;
-  nonstd::unique_ptr<ImageDataCache> m_pDataCache;
+  std::unique_ptr<ImageDataCache> m_pDataCache;
 };
 
 class CCodec_FaxModule : public ICodec_FaxModule {
  public:
   // ICodec_FaxModule:
   ICodec_ScanlineDecoder* CreateDecoder(const uint8_t* src_buf,
                                         FX_DWORD src_size,
                                         int width,
                                         int height,
                                         int K,
@@ skipping 210 matching lines @@
 OPJ_SIZE_T opj_read_from_memory(void* p_buffer,
                                 OPJ_SIZE_T nb_bytes,
                                 void* p_user_data);
 OPJ_SIZE_T opj_write_from_memory(void* p_buffer,
                                  OPJ_SIZE_T nb_bytes,
                                  void* p_user_data);
 OPJ_OFF_T opj_skip_from_memory(OPJ_OFF_T nb_bytes, void* p_user_data);
 OPJ_BOOL opj_seek_from_memory(OPJ_OFF_T nb_bytes, void* p_user_data);
 
 #endif  // CORE_SRC_FXCODEC_CODEC_CODEC_INT_H_