Refcount IFGAS_ streams all the time, too

xfa/fde/css/fde_css.h

 // 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
 
 #ifndef XFA_FDE_CSS_FDE_CSS_H_
 #define XFA_FDE_CSS_FDE_CSS_H_
 
 #include "core/fxge/fx_dib.h"
@@ skipping 733 matching lines @@
   FDE_CSSRULETYPE GetType() const override;
 
   virtual CFDE_CSSDeclaration* GetDeclaration() = 0;
 };
 
 class IFDE_CSSStyleSheet : public IFX_Retainable {
  public:
   static IFDE_CSSStyleSheet* LoadHTMLStandardStyleSheet();
   static IFDE_CSSStyleSheet* LoadFromStream(
       const CFX_WideString& szUrl,
-      IFGAS_Stream* pStream,
+      const CFX_RetainPtr<IFGAS_Stream>& pStream,
       uint16_t wCodePage,
       uint32_t dwMediaList = FDE_CSSMEDIATYPE_ALL);
   static IFDE_CSSStyleSheet* LoadFromBuffer(
       const CFX_WideString& szUrl,
       const FX_WCHAR* pBuffer,
       int32_t iBufSize,
       uint16_t wCodePage,
       uint32_t dwMediaList = FDE_CSSMEDIATYPE_ALL);
   virtual bool GetUrl(CFX_WideString& szUrl) = 0;
   virtual uint32_t GetMediaList() const = 0;
@@ skipping 130 matching lines @@
   virtual void Reset() = 0;
   virtual IFDE_CSSFontStyle* GetFontStyles() = 0;
   virtual IFDE_CSSBoundaryStyle* GetBoundaryStyles() = 0;
   virtual IFDE_CSSPositionStyle* GetPositionStyles() = 0;
   virtual IFDE_CSSParagraphStyle* GetParagraphStyles() = 0;
   virtual bool GetCustomStyle(const CFX_WideStringC& wsName,
                               CFX_WideString& wsValue) const = 0;
 };
 
 #endif  // XFA_FDE_CSS_FDE_CSS_H_