Add ptr_util.h from base until std::make_unique<> available

fpdfsdk/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 <vector>
 
 #include "core/fpdfapi/fpdf_page/cpdf_page.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_document.h"
 #include "core/fpdfapi/fpdf_render/cpdf_renderoptions.h"
 #include "core/fpdfdoc/cpdf_formcontrol.h"
 #include "core/fpdfdoc/cpdf_formfield.h"
 #include "core/fpdfdoc/cpdf_interform.h"
 #include "core/fpdfdoc/cpdf_occontext.h"
 #include "core/fxge/cfx_fxgedevice.h"
 #include "fpdfsdk/cpdfsdk_document.h"
 #include "fpdfsdk/cpdfsdk_environment.h"
 #include "fpdfsdk/cpdfsdk_interform.h"
 #include "fpdfsdk/cpdfsdk_pageview.h"
 #include "fpdfsdk/fsdk_actionhandler.h"
 #include "fpdfsdk/fsdk_define.h"
 #include "public/fpdfview.h"
+#include "third_party/base/ptr_util.h"
 #include "third_party/base/stl_util.h"
 
 #ifdef PDF_ENABLE_XFA
 #include "fpdfsdk/fpdfxfa/fpdfxfa_app.h"
 #include "fpdfsdk/fpdfxfa/fpdfxfa_doc.h"
 #include "fpdfsdk/fpdfxfa/fpdfxfa_page.h"
 #include "xfa/fxfa/xfa_ffdocview.h"
 #include "xfa/fxfa/xfa_ffpageview.h"
 #include "xfa/fxfa/xfa_ffwidget.h"
 #endif  // PDF_ENABLE_XFA
@@ skipping 210 matching lines @@
   // and can just return the old Env. Otherwise, we'll end up setting a new
   // SDKDocument into the XFADocument and, that could get weird.
   if (pDocument->GetSDKDoc())
     return pDocument->GetSDKDoc()->GetEnv();
 #endif
 
   CPDFSDK_Environment* pEnv = new CPDFSDK_Environment(pDocument, formInfo);
 
 #ifdef PDF_ENABLE_XFA
   // Ownership of the SDKDocument is passed to the CPDFXFA_Document.
-  pDocument->SetSDKDoc(WrapUnique(pEnv->GetSDKDocument()));
+  pDocument->SetSDKDoc(pdfium::WrapUnique(pEnv->GetSDKDocument()));
   CPDFXFA_App::GetInstance()->AddFormFillEnv(pEnv);
 #endif  // PDF_ENABLE_XFA
 
   return pEnv;
 }
 
 DLLEXPORT void STDCALL
 FPDFDOC_ExitFormFillEnvironment(FPDF_FORMHANDLE hHandle) {
   if (!hHandle)
     return;
@@ skipping 464 matching lines @@
       CPDF_Action action = aa.GetAction(CPDF_AAction::OpenPage);
       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);
     }
   }
 }