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

core/src/fpdfapi/fpdf_font/fpdf_font.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 "font_int.h"
 
 #include "core/src/fpdfapi/fpdf_page/pageint.h"
 #include "core/include/fpdfapi/fpdf_module.h"
@@ skipping 1682 matching lines @@
   const FX_CHAR* name =
       GetAdobeCharName(m_BaseEncoding, m_pCharNames, charcode);
   if (!name)
     return nullptr;
 
   CPDF_Stream* pStream =
       ToStream(m_pCharProcs ? m_pCharProcs->GetElementValue(name) : nullptr);
   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)));
 
   // This can trigger recursion into this method. The content of |m_CacheMap|
   // can change as a result. Thus after it returns, check the cache again for
   // a cache hit.
   pNewChar->m_pForm->ParseContent(nullptr, nullptr, pNewChar.get(), nullptr,
                                   level + 1);
   it = m_CacheMap.find(charcode);
   if (it != m_CacheMap.end())
@@ skipping 47 matching lines @@
   rect = pChar->m_BBox;
 }
 
 CPDF_Type3Char::CPDF_Type3Char(CPDF_Form* pForm)
     : m_pForm(pForm), m_pBitmap(nullptr), m_bColored(FALSE) {}
 
 CPDF_Type3Char::~CPDF_Type3Char() {
   delete m_pForm;
   delete m_pBitmap;
 }