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

core/fpdfdoc/cpdf_variabletext.cpp

 // Copyright 2016 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/fpdfdoc/cpdf_variabletext.h"
 
 #include <algorithm>
 
 #include "core/fpdfapi/font/cpdf_font.h"
 #include "core/fpdfdoc/cline.h"
 #include "core/fpdfdoc/cpvt_section.h"
 #include "core/fpdfdoc/cpvt_word.h"
 #include "core/fpdfdoc/cpvt_wordinfo.h"
 #include "core/fpdfdoc/csection.h"
 #include "core/fpdfdoc/ipvt_fontmap.h"
+#include "third_party/base/ptr_util.h"
 
 namespace {
 
 const float kFontScale = 0.001f;
 const uint8_t kReturnLength = 1;
 const float kScalePercent = 0.01f;
 
 const uint8_t gFontSizeSteps[] = {4,  6,  8,   9,   10,  12,  14, 18, 20,
                                   25, 30, 35,  40,  45,  50,  55, 60, 70,
                                   80, 90, 100, 110, 120, 130, 144};
@@ skipping 1061 matching lines @@
 int32_t CPDF_VariableText::GetDefaultFontIndex() {
   return m_pVTProvider ? m_pVTProvider->GetDefaultFontIndex() : -1;
 }
 
 bool CPDF_VariableText::IsLatinWord(uint16_t word) {
   return m_pVTProvider ? m_pVTProvider->IsLatinWord(word) : false;
 }
 
 CPDF_VariableText::Iterator* CPDF_VariableText::GetIterator() {
   if (!m_pVTIterator)
-    m_pVTIterator.reset(new CPDF_VariableText::Iterator(this));
+    m_pVTIterator = pdfium::MakeUnique<CPDF_VariableText::Iterator>(this);
   return m_pVTIterator.get();
 }
 
 void CPDF_VariableText::SetProvider(CPDF_VariableText::Provider* pProvider) {
   m_pVTProvider = pProvider;
 }
 
 CFX_SizeF CPDF_VariableText::GetPlateSize() const {
   return CFX_SizeF(GetPlateWidth(), GetPlateHeight());
 }
@@ skipping 22 matching lines @@
                        ptLeftTop.y);
 }
 
 CPVT_FloatRect CPDF_VariableText::OutToIn(const CFX_FloatRect& rect) const {
   CFX_FloatPoint ptLeftTop = OutToIn(CFX_FloatPoint(rect.left, rect.top));
   CFX_FloatPoint ptRightBottom =
       OutToIn(CFX_FloatPoint(rect.right, rect.bottom));
   return CPVT_FloatRect(ptLeftTop.x, ptLeftTop.y, ptRightBottom.x,
                         ptRightBottom.y);
 }