Avoid the ptr.reset(new XXX()) anti-pattern

core/fxcodec/jbig2/JBig2_HtrdProc.cpp

 // Copyright 2015 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/fxcodec/jbig2/JBig2_HtrdProc.h"
 
 #include <memory>
 
 #include "core/fxcodec/jbig2/JBig2_GsidProc.h"
 #include "core/fxcrt/fx_basic.h"
+#include "third_party/base/ptr_util.h"
 
 CJBig2_Image* CJBig2_HTRDProc::decode_Arith(CJBig2_ArithDecoder* pArithDecoder,
                                             JBig2ArithCtx* gbContext,
                                             IFX_Pause* pPause) {
   uint32_t ng, mg;
   int32_t x, y;
   uint32_t HBPP;
   uint32_t* GI;
   std::unique_ptr<CJBig2_Image> HSKIP;
   std::unique_ptr<CJBig2_Image> HTREG(new CJBig2_Image(HBW, HBH));
   HTREG->fill(HDEFPIXEL);
   if (HENABLESKIP == 1) {
-    HSKIP.reset(new CJBig2_Image(HGW, HGH));
+    HSKIP = pdfium::MakeUnique<CJBig2_Image>(HGW, HGH);
     for (mg = 0; mg < HGH; mg++) {
       for (ng = 0; ng < HGW; ng++) {
         x = (HGX + mg * HRY + ng * HRX) >> 8;
         y = (HGY + mg * HRX - ng * HRY) >> 8;
         if ((x + HPW <= 0) | (x >= (int32_t)HBW) | (y + HPH <= 0) |
             (y >= (int32_t)HPH)) {
           HSKIP->setPixel(ng, mg, 1);
         } else {
           HSKIP->setPixel(ng, mg, 0);
         }
@@ skipping 59 matching lines @@
       uint32_t pat_index = GI[mg * HGW + ng];
       if (pat_index >= HNUMPATS) {
         pat_index = HNUMPATS - 1;
       }
       HTREG->composeFrom(x, y, HPATS[pat_index], HCOMBOP);
     }
   }
   FX_Free(GI);
   return HTREG.release();
 }