3 files changed, 5 insertions, 6 deletions
diff --git a/core/fpdfapi/edit/cpdf_creator.cpp b/core/fpdfapi/edit/cpdf_creator.cpp
index e31da13a4d..5868c979f2 100644
--- a/core/fpdfapi/edit/cpdf_creator.cpp
+++ b/core/fpdfapi/edit/cpdf_creator.cpp
@@ -162,8 +162,7 @@ CPDF_Creator::~CPDF_Creator() {}
 bool CPDF_Creator::WriteStream(const CPDF_Object* pStream,
                                uint32_t objnum,
                                CPDF_CryptoHandler* pCrypto) {
-  CPDF_FlateEncoder encoder(const_cast<CPDF_Stream*>(pStream->AsStream()),
-                            pStream != m_pMetadata);
+  CPDF_FlateEncoder encoder(pStream->AsStream(), pStream != m_pMetadata);
   CPDF_Encryptor encryptor(pCrypto, objnum, encoder.GetData(),
                            encoder.GetSize());
   if (static_cast<uint32_t>(encoder.GetDict()->GetIntegerFor("Length")) !=
@@ -233,8 +232,7 @@ bool CPDF_Creator::WriteDirectObj(uint32_t objnum,
       break;
     }
     case CPDF_Object::STREAM: {
-      CPDF_FlateEncoder encoder(const_cast<CPDF_Stream*>(pObj->AsStream()),
-                                true);
+      CPDF_FlateEncoder encoder(pObj->AsStream(), true);
       CPDF_Encryptor encryptor(GetCryptoHandler(), objnum, encoder.GetData(),
                                encoder.GetSize());
       if (static_cast<uint32_t>(encoder.GetDict()->GetIntegerFor("Length")) !=
diff --git a/core/fpdfapi/edit/cpdf_flateencoder.cpp b/core/fpdfapi/edit/cpdf_flateencoder.cpp
index 555da84244..f68d02c31c 100644
--- a/core/fpdfapi/edit/cpdf_flateencoder.cpp
+++ b/core/fpdfapi/edit/cpdf_flateencoder.cpp
@@ -12,7 +12,8 @@
 #include "core/fpdfapi/parser/cpdf_number.h"
 #include "core/fpdfapi/parser/fpdf_parser_decode.h"
 
-CPDF_FlateEncoder::CPDF_FlateEncoder(CPDF_Stream* pStream, bool bFlateEncode)
+CPDF_FlateEncoder::CPDF_FlateEncoder(const CPDF_Stream* pStream,
+                                     bool bFlateEncode)
     : m_dwSize(0), m_pAcc(pdfium::MakeRetain<CPDF_StreamAcc>(pStream)) {
   m_pAcc->LoadAllDataRaw();
 
diff --git a/core/fpdfapi/edit/cpdf_flateencoder.h b/core/fpdfapi/edit/cpdf_flateencoder.h
index 887816c1a1..acac753e5c 100644
--- a/core/fpdfapi/edit/cpdf_flateencoder.h
+++ b/core/fpdfapi/edit/cpdf_flateencoder.h
@@ -17,7 +17,7 @@ class CPDF_Stream;
 
 class CPDF_FlateEncoder {
  public:
-  CPDF_FlateEncoder(CPDF_Stream* pStream, bool bFlateEncode);
+  CPDF_FlateEncoder(const CPDF_Stream* pStream, bool bFlateEncode);
   ~CPDF_FlateEncoder();
 
   void CloneDict();