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

fpdfsdk/src/fpdfformfill.cpp

 // 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
 
 #include "public/fpdf_formfill.h"
 
+#include <memory>
+
 #include "fpdfsdk/include/fsdk_define.h"
 #include "fpdfsdk/include/fsdk_mgr.h"
 #include "public/fpdfview.h"
-#include "third_party/base/nonstd_unique_ptr.h"
 
 namespace {
 
 CPDFSDK_Document* FormHandleToSDKDoc(FPDF_FORMHANDLE hHandle) {
   CPDFDoc_Environment* pEnv = (CPDFDoc_Environment*)hHandle;
   return pEnv ? pEnv->GetSDKDocument() : nullptr;
 }
 
 CPDFSDK_InterForm* FormHandleToInterForm(FPDF_FORMHANDLE hHandle) {
   CPDFSDK_Document* pSDKDoc = FormHandleToSDKDoc(hHandle);
@@ skipping 198 matching lines @@
   CFX_Matrix matrix;
   pPage->GetDisplayMatrix(matrix, start_x, start_y, size_x, size_y, rotate);
 
   FX_RECT clip;
   clip.left = start_x;
   clip.right = start_x + size_x;
   clip.top = start_y;
   clip.bottom = start_y + size_y;
 
 #ifdef _SKIA_SUPPORT_
-  nonstd::unique_ptr<CFX_SkiaDevice> pDevice(new CFX_SkiaDevice);
+  std::unique_ptr<CFX_SkiaDevice> pDevice(new CFX_SkiaDevice);
 #else
-  nonstd::unique_ptr<CFX_FxgeDevice> pDevice(new CFX_FxgeDevice);
+  std::unique_ptr<CFX_FxgeDevice> pDevice(new CFX_FxgeDevice);
 #endif
   pDevice->Attach((CFX_DIBitmap*)bitmap);
   pDevice->SaveState();
   pDevice->SetClip_Rect(&clip);
 
   if (CPDFSDK_PageView* pPageView = FormHandleToPageView(hHandle, pPage))
     pPageView->PageView_OnDraw(pDevice.get(), &matrix, &options);
 
   pDevice->RestoreState();
   delete options.m_pOCContext;
@@ skipping 98 matching lines @@
         pActionHandler->DoAction_Page(action, CPDF_AAction::OpenPage, pSDKDoc);
       }
     } else {
       if (aa.ActionExist(CPDF_AAction::ClosePage)) {
         CPDF_Action action = aa.GetAction(CPDF_AAction::ClosePage);
         pActionHandler->DoAction_Page(action, CPDF_AAction::ClosePage, pSDKDoc);
       }
     }
   }
 }