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

TBR=thakis@chromium.org

Review URL: https://codereview.chromium.org/1547833002 .

(cherry picked from commit d20dfba2ae10e8aeb328328f09da79ff904110a8)

Review URL: https://codereview.chromium.org/1545183002 .

12 files changed, 47 insertions, 47 deletions

diff --git a/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp b/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp
index 9c96a3027c..e1c39fbb16 100644
--- a/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp
+++ b/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp
@@ -846,7 +846,7 @@ CPDF_Font* CPDF_Document::AddFont(CFX_Font* pFont, int charset, FX_BOOL bVert) {
   }
   CPDF_Dictionary* pBaseDict = new CPDF_Dictionary;
   pBaseDict->SetAtName("Type", "Font");
-  nonstd::unique_ptr<CFX_UnicodeEncoding> pEncoding(
+  std::unique_ptr<CFX_UnicodeEncoding> pEncoding(
       new CFX_UnicodeEncoding(pFont));
   CPDF_Dictionary* pFontDict = pBaseDict;
   if (!bCJK) {
diff --git a/core/src/fpdfapi/fpdf_font/fpdf_font.cpp b/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
index a3de6f2777..003825b898 100644
--- a/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
+++ b/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
@@ -1700,7 +1700,7 @@ CPDF_Type3Char* CPDF_Type3Font::LoadChar(FX_DWORD charcode, int level) {
   if (!pStream)
     return nullptr;
 
-  nonstd::unique_ptr<CPDF_Type3Char> pNewChar(new CPDF_Type3Char(new CPDF_Form(
+  std::unique_ptr<CPDF_Type3Char> pNewChar(new CPDF_Type3Char(new CPDF_Form(
       m_pDocument, m_pFontResources ? m_pFontResources : m_pPageResources,
       pStream, nullptr)));
 
diff --git a/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp b/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp
index b10aa6952a..09930bee2d 100644
--- a/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp
+++ b/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp
@@ -6,9 +6,10 @@
 
 #include "ttgsubtable.h"
 
+#include <memory>
+
 #include "core/include/fxge/fx_freetype.h"
 #include "core/include/fxge/fx_ge.h"
-#include "third_party/base/nonstd_unique_ptr.h"
 #include "third_party/base/stl_util.h"
 
 CFX_GlyphMap::CFX_GlyphMap() {}
@@ -405,7 +406,7 @@ IFX_GSUBTable* IFX_GSUBTable::Create(CFX_Font* pFont) {
       FXFT_Load_Sfnt_Table(pFont->GetFace(), FT_MAKE_TAG('G', 'S', 'U', 'B'), 0,
                            pFont->GetSubData(), NULL);
   if (!error && pFont->GetSubData()) {
-    nonstd::unique_ptr<CFX_GSUBTable> pGsubTable(new CFX_GSUBTable);
+    std::unique_ptr<CFX_GSUBTable> pGsubTable(new CFX_GSUBTable);
     if (pGsubTable->m_GsubImp.LoadGSUBTable((FT_Bytes)pFont->GetSubData())) {
       return pGsubTable.release();
     }
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp
index 118f1cd5a3..15222fc594 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp
@@ -8,12 +8,12 @@
 
 #include <limits.h>
 
+#include <memory>
 #include <vector>
 
 #include "core/include/fpdfapi/fpdf_module.h"
 #include "core/include/fpdfapi/fpdf_page.h"
 #include "core/include/fxcrt/fx_safe_types.h"
-#include "third_party/base/nonstd_unique_ptr.h"
 #include "third_party/base/numerics/safe_conversions_impl.h"
 
 class CPDF_PSEngine;
@@ -768,7 +768,7 @@ FX_BOOL CPDF_StitchFunc::v_Init(CPDF_Object* pObj) {
     if (pSub == pObj) {
       return FALSE;
     }
-    nonstd::unique_ptr<CPDF_Function> pFunc(CPDF_Function::Load(pSub));
+    std::unique_ptr<CPDF_Function> pFunc(CPDF_Function::Load(pSub));
     if (!pFunc) {
       return FALSE;
     }
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
index 02ac27ac0f..1c4cc24208 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
@@ -92,7 +92,7 @@ void CPDF_StreamContentParser::Handle_BeginImage() {
     }
     CFX_ByteString key((const FX_CHAR*)m_pSyntax->GetWordBuf() + 1,
                        m_pSyntax->GetWordSize() - 1);
-    nonstd::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pObj(
+    std::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pObj(
         m_pSyntax->ReadNextObject());
     if (!key.IsEmpty()) {
       FX_DWORD dwObjNum = pObj ? pObj->GetObjNum() : 0;
diff --git a/core/src/fpdfapi/fpdf_page/pageint.h b/core/src/fpdfapi/fpdf_page/pageint.h
index d5a035fe2b..f41a987e34 100644
--- a/core/src/fpdfapi/fpdf_page/pageint.h
+++ b/core/src/fpdfapi/fpdf_page/pageint.h
@@ -8,10 +8,10 @@
 #define CORE_SRC_FPDFAPI_FPDF_PAGE_PAGEINT_H_
 
 #include <map>
+#include <memory>
 
 #include "core/include/fpdfapi/fpdf_page.h"
 #include "core/include/fpdfapi/fpdf_pageobj.h"
-#include "third_party/base/nonstd_unique_ptr.h"
 
 class CPDF_AllStates;
 class CPDF_ParseOptions;
@@ -319,7 +319,7 @@ class CPDF_StreamContentParser {
   FX_DWORD m_ParamStartPos;
   FX_DWORD m_ParamCount;
   CPDF_StreamParser* m_pSyntax;
-  nonstd::unique_ptr<CPDF_AllStates> m_pCurStates;
+  std::unique_ptr<CPDF_AllStates> m_pCurStates;
   CPDF_ContentMark m_CurContentMark;
   CFX_ArrayTemplate<CPDF_TextObject*> m_ClipTextList;
   CPDF_TextObject* m_pLastTextObject;
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
index 05f407bfd3..1115a1e560 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
@@ -6,6 +6,7 @@
 
 #include "parser_int.h"
 
+#include <memory>
 #include <set>
 #include <utility>
 #include <vector>
@@ -16,7 +17,6 @@
 #include "core/include/fxcrt/fx_ext.h"
 #include "core/include/fxcrt/fx_safe_types.h"
 #include "core/src/fpdfapi/fpdf_page/pageint.h"
-#include "third_party/base/nonstd_unique_ptr.h"
 #include "third_party/base/stl_util.h"
 
 namespace {
@@ -94,7 +94,7 @@ bool CanReadFromBitStream(const CFX_BitStream* hStream,
 // TODO(thestig) Using unique_ptr with ReleaseDeleter is still not ideal.
 // Come up or wait for something better.
 using ScopedFileStream =
-    nonstd::unique_ptr<IFX_FileStream, ReleaseDeleter<IFX_FileStream>>;
+    std::unique_ptr<IFX_FileStream, ReleaseDeleter<IFX_FileStream>>;
 
 FX_BOOL IsSignatureDict(const CPDF_Dictionary* pDict) {
   CPDF_Object* pType = pDict->GetElementValue("Type");
@@ -307,7 +307,7 @@ FX_DWORD CPDF_Parser::SetEncryptHandler() {
     if (!m_pSecurityHandler->OnInit(this, m_pEncryptDict)) {
       return err;
     }
-    nonstd::unique_ptr<CPDF_CryptoHandler> pCryptoHandler(
+    std::unique_ptr<CPDF_CryptoHandler> pCryptoHandler(
         m_pSecurityHandler->CreateCryptoHandler());
     if (!pCryptoHandler->Init(m_pEncryptDict, m_pSecurityHandler.get())) {
       return PDFPARSE_ERROR_HANDLER;
@@ -315,7 +315,7 @@ FX_DWORD CPDF_Parser::SetEncryptHandler() {
     m_Syntax.SetEncrypt(pCryptoHandler.release());
   } else if (m_pEncryptDict) {
     CFX_ByteString filter = m_pEncryptDict->GetString("Filter");
-    nonstd::unique_ptr<CPDF_SecurityHandler> pSecurityHandler;
+    std::unique_ptr<CPDF_SecurityHandler> pSecurityHandler;
     FX_DWORD err = PDFPARSE_ERROR_HANDLER;
     if (filter == "Standard") {
       pSecurityHandler.reset(FPDF_CreateStandardSecurityHandler());
@@ -328,7 +328,7 @@ FX_DWORD CPDF_Parser::SetEncryptHandler() {
       return err;
     }
     m_pSecurityHandler = std::move(pSecurityHandler);
-    nonstd::unique_ptr<CPDF_CryptoHandler> pCryptoHandler(
+    std::unique_ptr<CPDF_CryptoHandler> pCryptoHandler(
         m_pSecurityHandler->CreateCryptoHandler());
     if (!pCryptoHandler->Init(m_pEncryptDict, m_pSecurityHandler.get())) {
       return PDFPARSE_ERROR_HANDLER;
@@ -385,7 +385,7 @@ FX_BOOL CPDF_Parser::LoadAllCrossRefV4(FX_FILESIZE xrefpos) {
   while (xrefpos) {
     CrossRefList.InsertAt(0, xrefpos);
     LoadCrossRefV4(xrefpos, 0, TRUE);
-    nonstd::unique_ptr<CPDF_Dictionary, ReleaseDeleter<CPDF_Dictionary>> pDict(
+    std::unique_ptr<CPDF_Dictionary, ReleaseDeleter<CPDF_Dictionary>> pDict(
         LoadTrailerV4());
     if (!pDict)
       return FALSE;
@@ -1456,7 +1456,7 @@ CPDF_Dictionary* CPDF_Parser::LoadTrailerV4() {
   if (m_Syntax.GetKeyword() != "trailer")
     return nullptr;
 
-  nonstd::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pObj(
+  std::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pObj(
       m_Syntax.GetObject(m_pDocument, 0, 0, 0));
   if (!ToDictionary(pObj.get()))
     return nullptr;
@@ -2095,7 +2095,7 @@ CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjects* pObjList,
 
     int32_t nKeys = 0;
     FX_FILESIZE dwSignValuePos = 0;
-    nonstd::unique_ptr<CPDF_Dictionary, ReleaseDeleter<CPDF_Dictionary>> pDict(
+    std::unique_ptr<CPDF_Dictionary, ReleaseDeleter<CPDF_Dictionary>> pDict(
         new CPDF_Dictionary);
     while (1) {
       FX_BOOL bIsNumber;
@@ -2233,7 +2233,7 @@ CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(
   if (word == "[") {
     if (bTypeOnly)
       return (CPDF_Object*)PDFOBJ_ARRAY;
-    nonstd::unique_ptr<CPDF_Array, ReleaseDeleter<CPDF_Array>> pArray(
+    std::unique_ptr<CPDF_Array, ReleaseDeleter<CPDF_Array>> pArray(
         new CPDF_Array);
     while (CPDF_Object* pObj = GetObject(pObjList, objnum, gennum))
       pArray->Add(pObj);
@@ -2251,7 +2251,7 @@ CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(
     if (pContext)
       pContext->m_DictStart = SavedPos;
 
-    nonstd::unique_ptr<CPDF_Dictionary, ReleaseDeleter<CPDF_Dictionary>> pDict(
+    std::unique_ptr<CPDF_Dictionary, ReleaseDeleter<CPDF_Dictionary>> pDict(
         new CPDF_Dictionary);
     while (1) {
       FX_BOOL bIsNumber;
@@ -2271,7 +2271,7 @@ CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(
         continue;
 
       key = PDF_NameDecode(key);
-      nonstd::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> obj(
+      std::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> obj(
           GetObject(pObjList, objnum, gennum));
       if (!obj) {
         uint8_t ch;
@@ -2884,7 +2884,7 @@ class CPDF_DataAvail final : public IPDF_DataAvail {
   std::set<FX_DWORD> m_pageMapCheckState;
   std::set<FX_DWORD> m_pagesLoadState;
 
-  nonstd::unique_ptr<CPDF_HintTables> m_pHintTables;
+  std::unique_ptr<CPDF_HintTables> m_pHintTables;
   FX_BOOL m_bSupportHintTable;
 };
 
@@ -3599,9 +3599,9 @@ FX_BOOL CPDF_DataAvail::CheckHintTables(IFX_DownloadHints* pHints) {
     return FALSE;
   }
   m_syntaxParser.InitParser(m_pFileRead, m_dwHeaderOffset);
-  nonstd::unique_ptr<CPDF_HintTables> pHintTables(
+  std::unique_ptr<CPDF_HintTables> pHintTables(
       new CPDF_HintTables(this, pDict));
-  nonstd::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pHintStream(
+  std::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pHintStream(
       ParseIndirectObjectAt(szHSStart, 0));
   CPDF_Stream* pStream = ToStream(pHintStream.get());
   if (pStream && pHintTables->LoadHintStream(pStream))
@@ -3981,7 +3981,7 @@ FX_BOOL CPDF_DataAvail::CheckTrailer(IFX_DownloadHints* pHints) {
     }
     ScopedFileStream file(FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE));
     m_syntaxParser.InitParser(file.get(), 0);
-    nonstd::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pTrailer(
+    std::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pTrailer(
         m_syntaxParser.GetObject(nullptr, 0, 0));
     if (!pTrailer) {
       m_Pos += m_syntaxParser.SavePos();
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser_unittest.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser_unittest.cpp
index 3fd8dcf35a..3014ca280e 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser_unittest.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser_unittest.cpp
@@ -97,7 +97,7 @@ class CPDF_TestParser : public CPDF_Parser {
 // TODO(thestig) Using unique_ptr with ReleaseDeleter is still not ideal.
 // Come up or wait for something better.
 using ScopedFileStream =
-    nonstd::unique_ptr<IFX_FileStream, ReleaseDeleter<IFX_FileStream>>;
+    std::unique_ptr<IFX_FileStream, ReleaseDeleter<IFX_FileStream>>;
 
 TEST(fpdf_parser_parser, ReadHexString) {
   {
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render.cpp
index 1c46583e59..6a821ec069 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render.cpp
@@ -650,7 +650,7 @@ void CPDF_RenderStatus::ProcessClipPath(CPDF_ClipPath ClipPath,
     return;
   }
 
-  nonstd::unique_ptr<CFX_PathData> pTextClippingPath;
+  std::unique_ptr<CFX_PathData> pTextClippingPath;
   for (int i = 0; i < textcount; ++i) {
     CPDF_TextObject* pText = ClipPath.GetText(i);
     if (pText) {
@@ -811,7 +811,7 @@ FX_BOOL CPDF_RenderStatus::ProcessTransparency(const CPDF_PageObject* pPageObj,
   int width = FXSYS_round((FX_FLOAT)rect.Width() * scaleX);
   int height = FXSYS_round((FX_FLOAT)rect.Height() * scaleY);
   CFX_FxgeDevice bitmap_device;
-  nonstd::unique_ptr<CFX_DIBitmap> oriDevice;
+  std::unique_ptr<CFX_DIBitmap> oriDevice;
   if (!isolated && (m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) {
     oriDevice.reset(new CFX_DIBitmap);
     if (!m_pDevice->CreateCompatibleBitmap(oriDevice.get(), width, height))
@@ -827,7 +827,7 @@ FX_BOOL CPDF_RenderStatus::ProcessTransparency(const CPDF_PageObject* pPageObj,
   CFX_Matrix new_matrix = *pObj2Device;
   new_matrix.TranslateI(-rect.left, -rect.top);
   new_matrix.Scale(scaleX, scaleY);
-  nonstd::unique_ptr<CFX_DIBitmap> pTextMask;
+  std::unique_ptr<CFX_DIBitmap> pTextMask;
   if (bTextClip) {
     pTextMask.reset(new CFX_DIBitmap);
     if (!pTextMask->Create(width, height, FXDIB_8bppMask))
@@ -861,7 +861,7 @@ FX_BOOL CPDF_RenderStatus::ProcessTransparency(const CPDF_PageObject* pPageObj,
     FXSYS_memcpy(&smask_matrix, pGeneralState->m_SMaskMatrix,
                  sizeof smask_matrix);
     smask_matrix.Concat(*pObj2Device);
-    nonstd::unique_ptr<CFX_DIBSource> pSMaskSource(
+    std::unique_ptr<CFX_DIBSource> pSMaskSource(
         LoadSMask(pSMaskDict, &rect, &smask_matrix));
     if (pSMaskSource)
       bitmap->MultiplyAlpha(pSMaskSource.get());
@@ -896,7 +896,7 @@ CFX_DIBitmap* CPDF_RenderStatus::GetBackdrop(const CPDF_PageObject* pObj,
   FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d);
   int width = FXSYS_round(bbox.Width() * scaleX);
   int height = FXSYS_round(bbox.Height() * scaleY);
-  nonstd::unique_ptr<CFX_DIBitmap> pBackdrop(new CFX_DIBitmap);
+  std::unique_ptr<CFX_DIBitmap> pBackdrop(new CFX_DIBitmap);
   if (bBackAlphaRequired && !m_bDropObjects)
     pBackdrop->Create(width, height, FXDIB_Argb);
   else
@@ -1190,7 +1190,7 @@ CPDF_TransferFunc* CPDF_DocRenderData::GetTransferFunc(CPDF_Object* pObj) {
     return pTransferCounter->AddRef();
   }
 
-  nonstd::unique_ptr<CPDF_Function> pFuncs[3];
+  std::unique_ptr<CPDF_Function> pFuncs[3];
   FX_BOOL bUniTransfer = TRUE;
   FX_BOOL bIdentity = TRUE;
   if (CPDF_Array* pArray = pObj->AsArray()) {
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp
index d39d30f2a3..640adb14da 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp
@@ -107,7 +107,7 @@ void CPDF_RenderStatus::CompositeDIBitmap(CFX_DIBitmap* pDIBitmap,
   int back_left, back_top;
   FX_RECT rect(left, top, left + pDIBitmap->GetWidth(),
                top + pDIBitmap->GetHeight());
-  nonstd::unique_ptr<CFX_DIBitmap> pBackdrop(
+  std::unique_ptr<CFX_DIBitmap> pBackdrop(
       GetBackdrop(m_pCurObj, rect, back_left, back_top,
                   blend_mode > FXDIB_BLEND_NORMAL && bIsolated));
   if (!pBackdrop)
@@ -123,7 +123,7 @@ void CPDF_RenderStatus::CompositeDIBitmap(CFX_DIBitmap* pDIBitmap,
                              pDIBitmap, mask_argb, 0, 0, blend_mode);
   }
 
-  nonstd::unique_ptr<CFX_DIBitmap> pBackdrop1(new CFX_DIBitmap);
+  std::unique_ptr<CFX_DIBitmap> pBackdrop1(new CFX_DIBitmap);
   pBackdrop1->Create(pBackdrop->GetWidth(), pBackdrop->GetHeight(),
                      FXDIB_Rgb32);
   pBackdrop1->Clear((FX_DWORD)-1);
@@ -760,7 +760,7 @@ FX_BOOL CPDF_ImageRenderer::StartDIBSource() {
   FX_RECT dest_clip(
       dest_rect.left - image_rect.left, dest_rect.top - image_rect.top,
       dest_rect.right - image_rect.left, dest_rect.bottom - image_rect.top);
-  nonstd::unique_ptr<CFX_DIBitmap> pStretched(
+  std::unique_ptr<CFX_DIBitmap> pStretched(
       m_pDIBSource->StretchTo(dest_width, dest_height, m_Flags, &dest_clip));
   if (pStretched) {
     m_pRenderStatus->CompositeDIBitmap(pStretched.get(), dest_rect.left,
@@ -785,7 +785,7 @@ FX_BOOL CPDF_ImageRenderer::StartBitmapAlpha() {
     if (FXSYS_fabs(m_ImageMatrix.b) >= 0.5f ||
         FXSYS_fabs(m_ImageMatrix.c) >= 0.5f) {
       int left, top;
-      nonstd::unique_ptr<CFX_DIBitmap> pTransformed(
+      std::unique_ptr<CFX_DIBitmap> pTransformed(
           pAlphaMask->TransformTo(&m_ImageMatrix, left, top));
       if (!pTransformed)
         return TRUE;
@@ -874,7 +874,7 @@ CFX_DIBitmap* CPDF_RenderStatus::LoadSMask(CPDF_Dictionary* pSMaskDict,
   if (!pGroup) {
     return NULL;
   }
-  nonstd::unique_ptr<CPDF_Function> pFunc;
+  std::unique_ptr<CPDF_Function> pFunc;
   CPDF_Object* pFuncObj = pSMaskDict->GetElementValue("TR");
   if (pFuncObj && (pFuncObj->IsDictionary() || pFuncObj->IsStream()))
     pFunc.reset(CPDF_Function::Load(pFuncObj));
@@ -947,7 +947,7 @@ CFX_DIBitmap* CPDF_RenderStatus::LoadSMask(CPDF_Dictionary* pSMaskDict,
                     &options, 0, m_bDropObjects, pFormResource, TRUE, NULL, 0,
                     pCS ? pCS->GetFamily() : 0, bLuminosity);
   status.RenderObjectList(&form, &matrix);
-  nonstd::unique_ptr<CFX_DIBitmap> pMask(new CFX_DIBitmap);
+  std::unique_ptr<CFX_DIBitmap> pMask(new CFX_DIBitmap);
   if (!pMask->Create(width, height, FXDIB_8bppMask))
     return nullptr;
 
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
index 6bb8033686..c74aea9a21 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
@@ -6,6 +6,7 @@
 
 #include "render_int.h"
 
+#include <memory>
 #include <vector>
 
 #include "core/include/fpdfapi/fpdf_module.h"
@@ -15,7 +16,6 @@
 #include "core/include/fxcrt/fx_safe_types.h"
 #include "core/include/fxge/fx_ge.h"
 #include "core/src/fpdfapi/fpdf_page/pageint.h"
-#include "third_party/base/nonstd_unique_ptr.h"
 
 namespace {
 
@@ -63,7 +63,7 @@ bool IsAllowedBPCValue(int bpc) {
   return bpc == 1 || bpc == 2 || bpc == 4 || bpc == 8 || bpc == 16;
 }
 
-// Wrapper class to use with nonstd::unique_ptr for CJPX_Decoder.
+// Wrapper class to use with std::unique_ptr for CJPX_Decoder.
 class JpxBitMapContext {
  public:
   explicit JpxBitMapContext(ICodec_JpxModule* jpx_module)
@@ -199,7 +199,7 @@ CFX_DIBitmap* CPDF_DIBSource::GetBitmap() const {
   return m_pCachedBitmap ? m_pCachedBitmap.get() : Clone();
 }
 void CPDF_DIBSource::ReleaseBitmap(CFX_DIBitmap* pBitmap) const {
-  if (pBitmap && pBitmap != m_pCachedBitmap) {
+  if (pBitmap && pBitmap != m_pCachedBitmap.get()) {
     delete pBitmap;
   }
 }
@@ -682,8 +682,7 @@ void CPDF_DIBSource::LoadJpxBitmap() {
   if (!pJpxModule)
     return;
 
-  nonstd::unique_ptr<JpxBitMapContext> context(
-      new JpxBitMapContext(pJpxModule));
+  std::unique_ptr<JpxBitMapContext> context(new JpxBitMapContext(pJpxModule));
   context->set_decoder(pJpxModule->CreateDecoder(
       m_pStreamAcc->GetData(), m_pStreamAcc->GetSize(), m_pColorSpace));
   if (!context->decoder())
diff --git a/core/src/fpdfapi/fpdf_render/render_int.h b/core/src/fpdfapi/fpdf_render/render_int.h
index 6a63f61c06..5530754ab0 100644
--- a/core/src/fpdfapi/fpdf_render/render_int.h
+++ b/core/src/fpdfapi/fpdf_render/render_int.h
@@ -8,10 +8,10 @@
 #define CORE_SRC_FPDFAPI_FPDF_RENDER_RENDER_INT_H_
 
 #include <map>
+#include <memory>
 
 #include "core/include/fpdfapi/fpdf_pageobj.h"
 #include "core/include/fpdfapi/fpdf_render.h"
-#include "third_party/base/nonstd_unique_ptr.h"
 
 class CFX_GlyphBitmap;
 class CFX_ImageTransformer;
@@ -254,7 +254,7 @@ class CPDF_RenderStatus {
   const CPDF_PageObject* m_pStopObj;
   CPDF_GraphicStates m_InitialStates;
   int m_HalftoneLimit;
-  nonstd::unique_ptr<IPDF_ObjectRenderer> m_pObjectRenderer;
+  std::unique_ptr<IPDF_ObjectRenderer> m_pObjectRenderer;
   FX_BOOL m_bPrint;
   int m_Transparency;
   int m_DitherBits;
@@ -392,7 +392,7 @@ class CPDF_ScaledRenderBuffer {
   CPDF_RenderContext* m_pContext;
   FX_RECT m_Rect;
   const CPDF_PageObject* m_pObject;
-  nonstd::unique_ptr<CFX_FxgeDevice> m_pBitmapDevice;
+  std::unique_ptr<CFX_FxgeDevice> m_pBitmapDevice;
   CFX_Matrix m_Matrix;
 };
 
@@ -414,7 +414,7 @@ class CPDF_DeviceBuffer {
   CPDF_RenderContext* m_pContext;
   FX_RECT m_Rect;
   const CPDF_PageObject* m_pObject;
-  nonstd::unique_ptr<CFX_DIBitmap> m_pBitmap;
+  std::unique_ptr<CFX_DIBitmap> m_pBitmap;
   CFX_Matrix m_Matrix;
 };
 
@@ -589,7 +589,7 @@ class CPDF_DIBSource : public CFX_DIBSource {
   DIB_COMP_DATA* m_pCompData;
   uint8_t* m_pLineBuf;
   uint8_t* m_pMaskedLine;
-  nonstd::unique_ptr<CFX_DIBitmap> m_pCachedBitmap;
+  std::unique_ptr<CFX_DIBitmap> m_pCachedBitmap;
   ICodec_ScanlineDecoder* m_pDecoder;
 };