Properly ref-count CFGAS_GEFont with CFX_RetainPtr.

xfa/fwl/cfwl_edit.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/cfwl_edit.h"
 
 #include <algorithm>
 #include <memory>
@@ skipping 670 matching lines @@
   CFWL_ThemePart part;
   part.m_pWidget = this;
   m_fFontSize = theme ? theme->GetFontSize(&part) : FWLTHEME_CAPACITY_FontSize;
 
   if (!theme)
     return;
 
   params.dwFontColor = theme->GetTextColor(&part);
   params.fLineSpace = theme->GetLineHeight(&part);
 
-  CFGAS_GEFont* pFont = theme->GetFont(&part);
+  CFX_RetainPtr<CFGAS_GEFont> pFont = theme->GetFont(&part);
   if (!pFont)
     return;
 
   params.pFont = pFont;
   params.fFontSize = m_fFontSize;
   params.nLineCount = (int32_t)(params.fPlateHeight / params.fLineSpace);
   if (params.nLineCount <= 0)
     params.nLineCount = 1;
   params.fTabWidth = params.fFontSize * 1;
   params.bTabEquidistant = true;
@@ skipping 861 matching lines @@
   pScrollBar->SetTrackPos(fPos);
   UpdateOffset(pScrollBar, fPos - iCurPos);
   UpdateCaret();
 
   CFX_RectF rect = GetWidgetRect();
   CFX_RectF rtInvalidate;
   rtInvalidate.Set(0, 0, rect.width + 2, rect.height + 2);
   RepaintRect(rtInvalidate);
   return true;
 }