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

core/fxge/agg/fx_agg_driver.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 "core/fxge/agg/fx_agg_driver.h"
 
 #include <algorithm>
 
 #include "core/fxcodec/fx_codec.h"
 #include "core/fxcrt/fx_memory.h"
 #include "core/fxge/cfx_fxgedevice.h"
 #include "core/fxge/cfx_gemodule.h"
 #include "core/fxge/cfx_graphstatedata.h"
 #include "core/fxge/cfx_pathdata.h"
 #include "core/fxge/cfx_renderdevice.h"
 #include "core/fxge/dib/dib_int.h"
 #include "core/fxge/ge/cfx_cliprgn.h"
 #include "core/fxge/ge/fx_text_int.h"
 #include "core/fxge/ifx_renderdevicedriver.h"
 #include "third_party/agg23/agg_conv_dash.h"
 #include "third_party/agg23/agg_conv_stroke.h"
 #include "third_party/agg23/agg_curves.h"
 #include "third_party/agg23/agg_path_storage.h"
 #include "third_party/agg23/agg_pixfmt_gray.h"
 #include "third_party/agg23/agg_rasterizer_scanline_aa.h"
 #include "third_party/agg23/agg_renderer_scanline.h"
 #include "third_party/agg23/agg_scanline_u.h"
+#include "third_party/base/ptr_util.h"
 
 namespace {
 
 void HardClip(FX_FLOAT& x, FX_FLOAT& y) {
   x = std::max(std::min(x, 50000.0f), -50000.0f);
   y = std::max(std::min(y, 50000.0f), -50000.0f);
 }
 
 void RgbByteOrderSetPixel(CFX_DIBitmap* pBitmap, int x, int y, uint32_t argb) {
   if (x < 0 || x >= pBitmap->GetWidth() || y < 0 || y >= pBitmap->GetHeight())
@@ skipping 451 matching lines @@
       }
       return flags;
     }
   }
   return 0;
 }
 
 void CFX_AggDeviceDriver::SaveState() {
   std::unique_ptr<CFX_ClipRgn> pClip;
   if (m_pClipRgn)
-    pClip = WrapUnique(new CFX_ClipRgn(*m_pClipRgn));
+    pClip = pdfium::MakeUnique<CFX_ClipRgn>(*m_pClipRgn);
   m_StateStack.push_back(std::move(pClip));
 }
 
 void CFX_AggDeviceDriver::RestoreState(bool bKeepSaved) {
   m_pClipRgn.reset();
 
   if (m_StateStack.empty())
     return;
 
   if (bKeepSaved) {
     if (m_StateStack.back())
-      m_pClipRgn = WrapUnique(new CFX_ClipRgn(*m_StateStack.back()));
+      m_pClipRgn = pdfium::MakeUnique<CFX_ClipRgn>(*m_StateStack.back());
   } else {
     m_pClipRgn = std::move(m_StateStack.back());
     m_StateStack.pop_back();
   }
 }
 
 void CFX_AggDeviceDriver::SetClipMask(agg::rasterizer_scanline_aa& rasterizer) {
   FX_RECT path_rect(rasterizer.min_x(), rasterizer.min_y(),
                     rasterizer.max_x() + 1, rasterizer.max_y() + 1);
   path_rect.Intersect(m_pClipRgn->GetBox());
@@ skipping 13 matching lines @@
   agg::render_scanlines(rasterizer, scanline, final_render,
                         (m_FillFlags & FXFILL_NOPATHSMOOTH) != 0);
   m_pClipRgn->IntersectMaskF(path_rect.left, path_rect.top, mask);
 }
 
 FX_BOOL CFX_AggDeviceDriver::SetClip_PathFill(const CFX_PathData* pPathData,
                                               const CFX_Matrix* pObject2Device,
                                               int fill_mode) {
   m_FillFlags = fill_mode;
   if (!m_pClipRgn) {
-    m_pClipRgn = WrapUnique(new CFX_ClipRgn(GetDeviceCaps(FXDC_PIXEL_WIDTH),
-                                            GetDeviceCaps(FXDC_PIXEL_HEIGHT)));
+    m_pClipRgn = pdfium::MakeUnique<CFX_ClipRgn>(
+        GetDeviceCaps(FXDC_PIXEL_WIDTH), GetDeviceCaps(FXDC_PIXEL_HEIGHT));
   }
   if (pPathData->GetPointCount() == 5 || pPathData->GetPointCount() == 4) {
     CFX_FloatRect rectf;
     if (pPathData->IsRect(pObject2Device, &rectf)) {
       rectf.Intersect(
           CFX_FloatRect(0, 0, (FX_FLOAT)GetDeviceCaps(FXDC_PIXEL_WIDTH),
                         (FX_FLOAT)GetDeviceCaps(FXDC_PIXEL_HEIGHT)));
       FX_RECT rect = rectf.GetOuterRect();
       m_pClipRgn->IntersectRect(rect);
       return TRUE;
@@ skipping 11 matching lines @@
                               : agg::fill_even_odd);
   SetClipMask(rasterizer);
   return TRUE;
 }
 
 FX_BOOL CFX_AggDeviceDriver::SetClip_PathStroke(
     const CFX_PathData* pPathData,
     const CFX_Matrix* pObject2Device,
     const CFX_GraphStateData* pGraphState) {
   if (!m_pClipRgn) {
-    m_pClipRgn = WrapUnique(new CFX_ClipRgn(GetDeviceCaps(FXDC_PIXEL_WIDTH),
-                                            GetDeviceCaps(FXDC_PIXEL_HEIGHT)));
+    m_pClipRgn = pdfium::MakeUnique<CFX_ClipRgn>(
+        GetDeviceCaps(FXDC_PIXEL_WIDTH), GetDeviceCaps(FXDC_PIXEL_HEIGHT));
   }
   CAgg_PathData path_data;
   path_data.BuildPath(pPathData, nullptr);
   agg::rasterizer_scanline_aa rasterizer;
   rasterizer.clip_box(0.0f, 0.0f, (FX_FLOAT)(GetDeviceCaps(FXDC_PIXEL_WIDTH)),
                       (FX_FLOAT)(GetDeviceCaps(FXDC_PIXEL_HEIGHT)));
   RasterizeStroke(rasterizer, path_data.m_PathData, pObject2Device,
                   pGraphState);
   rasterizer.filling_rule(agg::fill_non_zero);
   SetClipMask(rasterizer);
@@ skipping 1136 matching lines @@
 }
 
 bool CFX_FxgeDevice::Attach(CFX_DIBitmap* pBitmap,
                             bool bRgbByteOrder,
                             CFX_DIBitmap* pOriDevice,
                             bool bGroupKnockout) {
   if (!pBitmap)
     return false;
 
   SetBitmap(pBitmap);
-  SetDeviceDriver(WrapUnique(new CFX_AggDeviceDriver(
-      pBitmap, bRgbByteOrder, pOriDevice, bGroupKnockout)));
+  SetDeviceDriver(pdfium::MakeUnique<CFX_AggDeviceDriver>(
+      pBitmap, bRgbByteOrder, pOriDevice, bGroupKnockout));
   return true;
 }
 
 bool CFX_FxgeDevice::Create(int width,
                             int height,
                             FXDIB_Format format,
                             CFX_DIBitmap* pOriDevice) {
   m_bOwnedBitmap = true;
   CFX_DIBitmap* pBitmap = new CFX_DIBitmap;
   if (!pBitmap->Create(width, height, format)) {
     delete pBitmap;
     return false;
   }
   SetBitmap(pBitmap);
-  SetDeviceDriver(
-      WrapUnique(new CFX_AggDeviceDriver(pBitmap, FALSE, pOriDevice, FALSE)));
+  SetDeviceDriver(pdfium::MakeUnique<CFX_AggDeviceDriver>(pBitmap, FALSE,
+                                                          pOriDevice, FALSE));
   return true;
 }
 
 CFX_FxgeDevice::~CFX_FxgeDevice() {
   if (m_bOwnedBitmap) {
     delete GetBitmap();
   }
 }
 #endif