Properly ref-count CFGAS_GEFont with CFX_RetainPtr.

xfa/fwl/theme/cfwl_widgettp.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/fwl/theme/cfwl_widgettp.h"
 
 #include <algorithm>
 #include <utility>
@@ skipping 280 matching lines @@
   m_dwStyles = dwFontStyles;
   m_dwCodePage = dwCodePage;
   if (!m_pFontMgr) {
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
     m_pFontMgr = CFGAS_FontMgr::Create(FX_GetDefFontEnumerator());
 #else
     m_pFontSource = pdfium::MakeUnique<CFX_FontSourceEnum_File>();
     m_pFontMgr = CFGAS_FontMgr::Create(m_pFontSource.get());
 #endif
   }
-  m_pFont.reset(CFGAS_GEFont::LoadFont(wsFontFamily.c_str(), dwFontStyles,
-                                       dwCodePage, m_pFontMgr.get()));
+  m_pFont = CFGAS_GEFont::LoadFont(wsFontFamily.c_str(), dwFontStyles,
+                                   dwCodePage, m_pFontMgr.get());
   return !!m_pFont;
 }
 
 CFWL_FontManager* CFWL_FontManager::s_FontManager = nullptr;
 CFWL_FontManager* CFWL_FontManager::GetInstance() {
   if (!s_FontManager)
     s_FontManager = new CFWL_FontManager;
   return s_FontManager;
 }
 
 void CFWL_FontManager::DestroyInstance() {
   delete s_FontManager;
   s_FontManager = nullptr;
 }
 
 CFWL_FontManager::CFWL_FontManager() {}
 
 CFWL_FontManager::~CFWL_FontManager() {}
 
-CFGAS_GEFont* CFWL_FontManager::FindFont(const CFX_WideStringC& wsFontFamily,
-                                         uint32_t dwFontStyles,
-                                         uint16_t wCodePage) {
+CFX_RetainPtr<CFGAS_GEFont> CFWL_FontManager::FindFont(
+    const CFX_WideStringC& wsFontFamily,
+    uint32_t dwFontStyles,
+    uint16_t wCodePage) {
   for (const auto& pData : m_FontsArray) {
     if (pData->Equal(wsFontFamily, dwFontStyles, wCodePage))
       return pData->GetFont();
   }
-  std::unique_ptr<CFWL_FontData> pFontData(new CFWL_FontData);
+  auto pFontData = pdfium::MakeUnique<CFWL_FontData>();
   if (!pFontData->LoadFont(wsFontFamily, dwFontStyles, wCodePage))
     return nullptr;
+
   m_FontsArray.push_back(std::move(pFontData));
   return m_FontsArray.back()->GetFont();
 }
 
 void FWLTHEME_Release() {
   CFWL_FontManager::DestroyInstance();
 }