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

fpdfsdk/src/javascript/app.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 "app.h"
 
+#include <memory>
+
 #include "Document.h"
 #include "JS_Context.h"
 #include "JS_Define.h"
 #include "JS_EventHandler.h"
 #include "JS_Object.h"
 #include "JS_Runtime.h"
 #include "JS_Value.h"
 #include "fpdfsdk/include/fsdk_mgr.h"  // For CPDFDoc_Environment.
 #include "fpdfsdk/include/javascript/IJavaScript.h"
 #include "resource.h"
-#include "third_party/base/nonstd_unique_ptr.h"
 
 BEGIN_JS_STATIC_CONST(CJS_TimerObj)
 END_JS_STATIC_CONST()
 
 BEGIN_JS_STATIC_PROP(CJS_TimerObj)
 END_JS_STATIC_PROP()
 
 BEGIN_JS_STATIC_METHOD(CJS_TimerObj)
 END_JS_STATIC_METHOD()
 
@@ skipping 732 matching lines @@
       // FALLTHROUGH
       default:
         break;
     }
   }
 
   CJS_Context* pContext = (CJS_Context*)cc;
   CPDFDoc_Environment* pApp = pContext->GetReaderApp();
 
   const int MAX_INPUT_BYTES = 2048;
-  nonstd::unique_ptr<char[]> pBuff(new char[MAX_INPUT_BYTES + 2]);
+  std::unique_ptr<char[]> pBuff(new char[MAX_INPUT_BYTES + 2]);
   memset(pBuff.get(), 0, MAX_INPUT_BYTES + 2);
   int nLengthBytes = pApp->JS_appResponse(
       swQuestion.c_str(), swTitle.c_str(), swDefault.c_str(), swLabel.c_str(),
       bPassWord, pBuff.get(), MAX_INPUT_BYTES);
   if (nLengthBytes <= 0) {
     vRet.SetNull();
     return FALSE;
   }
   nLengthBytes = std::min(nLengthBytes, MAX_INPUT_BYTES);
 
   CFX_WideString ret_string = CFX_WideString::FromUTF16LE(
       (unsigned short*)pBuff.get(), nLengthBytes / sizeof(unsigned short));
   vRet = ret_string.c_str();
   return TRUE;
 }
 
 FX_BOOL app::media(IJS_Context* cc, CJS_PropValue& vp, CFX_WideString& sError) {
   return FALSE;
 }
 
 FX_BOOL app::execDialog(IJS_Context* cc,
                         const std::vector<CJS_Value>& params,
                         CJS_Value& vRet,
                         CFX_WideString& sError) {
   return TRUE;
 }