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

core/include/fpdfapi/fpdf_render.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_INCLUDE_FPDFAPI_FPDF_RENDER_H_
 #define CORE_INCLUDE_FPDFAPI_FPDF_RENDER_H_
 
 #include <map>
+#include <memory>
 
 #include "core/include/fpdfapi/fpdf_page.h"
 #include "core/include/fxge/fx_ge.h"
-#include "third_party/base/nonstd_unique_ptr.h"
 
 class CFX_GraphStateData;
 class CFX_PathData;
 class CFX_RenderDevice;
 class CPDF_FormObject;
 class CPDF_ImageCacheEntry;
 class CPDF_ImageObject;
 class CPDF_PathObject;
 class CPDF_RenderContext;
 class CPDF_RenderOptions;
@@ skipping 119 matching lines @@
   void Continue(IFX_Pause* pPause);
   int EstimateProgress();
 
  private:
   void RenderStep();
 
   Status m_Status;
   CPDF_RenderContext* const m_pContext;
   CFX_RenderDevice* const m_pDevice;
   const CPDF_RenderOptions* const m_pOptions;
-  nonstd::unique_ptr<CPDF_RenderStatus> m_pRenderStatus;
+  std::unique_ptr<CPDF_RenderStatus> m_pRenderStatus;
   CFX_FloatRect m_ClipRect;
   FX_DWORD m_LayerIndex;
   FX_DWORD m_ObjectIndex;
   FX_POSITION m_ObjectPos;
   FX_POSITION m_PrevLastPos;
 };
 
 class CPDF_TextRenderer {
  public:
   static void DrawTextString(CFX_RenderDevice* pDevice,
@@ skipping 106 matching lines @@
  public:
   CPDF_RenderConfig();
   ~CPDF_RenderConfig();
   int m_HalftoneLimit;
   int m_RenderStepLimit;
 };
 
 FX_BOOL IsAvailableMatrix(const CFX_Matrix& matrix);
 
 #endif  // CORE_INCLUDE_FPDFAPI_FPDF_RENDER_H_