Refcount all the IFX_ stream classes all the time.

core/fpdfapi/parser/cfdf_document.cpp

Index: core/fpdfapi/parser/cfdf_document.cpp
diff --git a/core/fpdfapi/parser/cfdf_document.cpp b/core/fpdfapi/parser/cfdf_document.cpp
index a6045e7795e37a359c18ee92a1bbcef57a43a933..65755520c08d7c6cbb0eb24ef721bd560c98a4c7 100644
--- a/core/fpdfapi/parser/cfdf_document.cpp
+++ b/core/fpdfapi/parser/cfdf_document.cpp
@@ -15,15 +15,9 @@
 #include "third_party/base/ptr_util.h"
 
 CFDF_Document::CFDF_Document()
-    : CPDF_IndirectObjectHolder(),
-      m_pRootDict(nullptr),
-      m_pFile(nullptr),
-      m_bOwnFile(false) {}
-
-CFDF_Document::~CFDF_Document() {
-  if (m_bOwnFile && m_pFile)
-    m_pFile->Release();
-}
+    : CPDF_IndirectObjectHolder(), m_pRootDict(nullptr) {}
+
+CFDF_Document::~CFDF_Document() {}
 
 std::unique_ptr<CFDF_Document> CFDF_Document::CreateNewDoc() {
   auto pDoc = pdfium::MakeUnique<CFDF_Document>();
@@ -33,25 +27,23 @@ std::unique_ptr<CFDF_Document> CFDF_Document::CreateNewDoc() {
 }
 
 std::unique_ptr<CFDF_Document> CFDF_Document::ParseFile(
-    IFX_SeekableReadStream* pFile,
-    bool bOwnFile) {
+    const CFX_RetainPtr<IFX_SeekableReadStream>& pFile) {
   if (!pFile)
     return nullptr;
 
   auto pDoc = pdfium::MakeUnique<CFDF_Document>();
-  pDoc->ParseStream(pFile, bOwnFile);
+  pDoc->ParseStream(pFile);
   return pDoc->m_pRootDict ? std::move(pDoc) : nullptr;
 }
 
-std::unique_ptr<CFDF_Document> CFDF_Document::ParseMemory(const uint8_t* pData,
+std::unique_ptr<CFDF_Document> CFDF_Document::ParseMemory(uint8_t* pData,
                                                           uint32_t size) {
-  return CFDF_Document::ParseFile(
-      IFX_MemoryStream::Create((uint8_t*)pData, size), true);
+  return CFDF_Document::ParseFile(IFX_MemoryStream::Create(pData, size));
 }
 
-void CFDF_Document::ParseStream(IFX_SeekableReadStream* pFile, bool bOwnFile) {
+void CFDF_Document::ParseStream(
+    const CFX_RetainPtr<IFX_SeekableReadStream>& pFile) {
   m_pFile = pFile;
-  m_bOwnFile = bOwnFile;
   CPDF_SyntaxParser parser;
   parser.InitParser(m_pFile, 0);
   while (1) {