Use smart pointers for CFX_Font and CFX_Type3Font classes

xfa/fgas/font/fgas_gefont.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 "xfa/fgas/font/fgas_gefont.h"
 
 #include "xfa/fgas/crt/fgas_codepage.h"
 #include "xfa/fgas/font/fgas_fontutils.h"
@@ skipping 91 matching lines @@
       m_pCharWidthMap(nullptr),
       m_pRectArray(nullptr),
       m_pBBoxMap(nullptr),
       m_pProvider(nullptr) {
   ASSERT(src.m_pFont);
   m_pFont = new CFX_Font;
   m_pFont->LoadClone(src.m_pFont);
   CFX_SubstFont* pSubst = m_pFont->GetSubstFont();
   if (!pSubst) {
     pSubst = new CFX_SubstFont;
-    m_pFont->SetSubstFont(pSubst);
+    m_pFont->SetSubstFont(std::unique_ptr<CFX_SubstFont>(pSubst));
   }
   pSubst->m_Weight =
       (dwFontStyles & FX_FONTSTYLE_Bold) ? FXFONT_FW_BOLD : FXFONT_FW_NORMAL;
   if (dwFontStyles & FX_FONTSTYLE_Italic) {
     pSubst->m_SubstFlags |= FXFONT_SUBST_ITALIC;
   }
   InitFont();
 }
 
 CFGAS_GEFont::~CFGAS_GEFont() {
@@ skipping 351 matching lines @@
   }
   if (m_pRectArray) {
     m_pRectArray->RemoveAll(FALSE);
   }
 }
 CFGAS_GEFont* CFGAS_GEFont::GetSubstFont(int32_t iGlyphIndex) const {
   iGlyphIndex = ((uint32_t)iGlyphIndex) >> 24;
   return iGlyphIndex == 0 ? const_cast<CFGAS_GEFont*>(this)
                           : m_SubstFonts[iGlyphIndex - 1];
 }