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

core/fxge/win32/fx_win32_device.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 <crtdbg.h>
 
 #include <algorithm>
 #include <memory>
 #include <vector>
 
 #include "core/fxcodec/fx_codec.h"
 #include "core/fxcrt/fx_memory.h"
 #include "core/fxcrt/fx_system.h"
 #include "core/fxge/cfx_fontmapper.h"
 #include "core/fxge/cfx_gemodule.h"
 #include "core/fxge/cfx_graphstatedata.h"
 #include "core/fxge/cfx_pathdata.h"
 #include "core/fxge/cfx_windowsdevice.h"
 #include "core/fxge/dib/dib_int.h"
 #include "core/fxge/fx_font.h"
 #include "core/fxge/fx_freetype.h"
 #include "core/fxge/ge/cfx_folderfontinfo.h"
 #include "core/fxge/ge/fx_text_int.h"
 #include "core/fxge/ifx_systemfontinfo.h"
 #include "core/fxge/win32/cfx_windowsdib.h"
 #include "core/fxge/win32/dwrite_int.h"
 #include "core/fxge/win32/win32_int.h"
+#include "third_party/base/ptr_util.h"
 #include "third_party/base/stl_util.h"
 
 #ifndef _SKIA_SUPPORT_
 #include "core/fxge/agg/fx_agg_driver.h"
 #endif
 
 namespace {
 
 const struct {
   const FX_CHAR* m_pFaceName;
@@ skipping 1322 matching lines @@
                                        int bitmap_alpha,
                                        uint32_t color,
                                        const CFX_Matrix* pMatrix,
                                        uint32_t render_flags,
                                        void*& handle,
                                        int blend_type) {
   return FALSE;
 }
 
 CFX_WindowsDevice::CFX_WindowsDevice(HDC hDC) {
-  SetDeviceDriver(WrapUnique(CreateDriver(hDC)));
+  SetDeviceDriver(pdfium::WrapUnique(CreateDriver(hDC)));
 }
 
 CFX_WindowsDevice::~CFX_WindowsDevice() {}
 
 HDC CFX_WindowsDevice::GetDC() const {
   IFX_RenderDeviceDriver* pRDD = GetDeviceDriver();
   return pRDD ? reinterpret_cast<HDC>(pRDD->GetPlatformSurface()) : nullptr;
 }
 
 // static
 IFX_RenderDeviceDriver* CFX_WindowsDevice::CreateDriver(HDC hDC) {
   int device_type = ::GetDeviceCaps(hDC, TECHNOLOGY);
   int obj_type = ::GetObjectType(hDC);
   bool use_printer = device_type == DT_RASPRINTER ||
                      device_type == DT_PLOTTER || obj_type == OBJ_ENHMETADC;
   if (use_printer)
     return new CGdiPrinterDriver(hDC);
   return new CGdiDisplayDriver(hDC);
 }