Properly ref-count CFGAS_GEFont with CFX_RetainPtr.

xfa/fxfa/app/xfa_fwltheme.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/fxfa/app/xfa_fwltheme.h"
 
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fgas/crt/fgas_codepage.h"
@@ skipping 57 matching lines @@
   if (!m_pCalendarFont) {
     m_pCalendarFont = m_pApp->GetFDEFontMgr()->GetFontByCodePage(
         FX_CODEPAGE_MSWin_WesternEuropean, 0, nullptr);
   }
 
   ASSERT(m_pCalendarFont);
 }
 
 CXFA_FWLTheme::~CXFA_FWLTheme() {
   m_pTextOut.reset();
-  if (m_pCalendarFont) {
-    m_pCalendarFont->Release();
-    m_pCalendarFont = nullptr;
-  }
   FWLTHEME_Release();
 }
 
 void CXFA_FWLTheme::DrawBackground(CFWL_ThemeBackground* pParams) {
   GetTheme(pParams->m_pWidget)->DrawBackground(pParams);
 }
 
 void CXFA_FWLTheme::DrawText(CFWL_ThemeText* pParams) {
   if (pParams->m_wsText.IsEmpty())
     return;
@@ skipping 94 matching lines @@
 float CXFA_FWLTheme::GetCYBorderSize() const {
   return 1.0f;
 }
 
 float CXFA_FWLTheme::GetFontSize(CFWL_ThemePart* pThemePart) const {
   if (CXFA_FFWidget* pWidget = XFA_ThemeGetOuterWidget(pThemePart->m_pWidget))
     return pWidget->GetDataAcc()->GetFontSize();
   return FWLTHEME_CAPACITY_FontSize;
 }
 
-CFGAS_GEFont* CXFA_FWLTheme::GetFont(CFWL_ThemePart* pThemePart) const {
+CFX_RetainPtr<CFGAS_GEFont> CXFA_FWLTheme::GetFont(
+    CFWL_ThemePart* pThemePart) const {
   if (CXFA_FFWidget* pWidget = XFA_ThemeGetOuterWidget(pThemePart->m_pWidget))
     return pWidget->GetDataAcc()->GetFDEFont();
   return GetTheme(pThemePart->m_pWidget)->GetFont();
 }
 
 float CXFA_FWLTheme::GetLineHeight(CFWL_ThemePart* pThemePart) const {
   if (CXFA_FFWidget* pWidget = XFA_ThemeGetOuterWidget(pThemePart->m_pWidget))
     return pWidget->GetDataAcc()->GetLineHeight();
   return kLineHeight;
 }
@@ skipping 73 matching lines @@
     case FWL_Type::PushButton:
       return m_pPushButtonTP.get();
     case FWL_Type::Caret:
       return m_pCaretTP.get();
     case FWL_Type::Barcode:
       return m_pBarcodeTP.get();
     default:
       return nullptr;
   }
 }