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diff --git a/core/fpdfapi/page/cpdf_streamparser.h b/core/fpdfapi/page/cpdf_streamparser.h
new file mode 100644
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+++ b/core/fpdfapi/page/cpdf_streamparser.h
@@ -0,0 +1,60 @@
+// Copyright 2016 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 CORE_FPDFAPI_PAGE_CPDF_STREAMPARSER_H_
+#define CORE_FPDFAPI_PAGE_CPDF_STREAMPARSER_H_
+
+#include <memory>
+#include <utility>
+
+#include "core/fpdfapi/parser/cpdf_dictionary.h"
+#include "core/fpdfapi/parser/cpdf_document.h"
+#include "core/fpdfapi/parser/cpdf_object.h"
+#include "core/fpdfapi/parser/cpdf_stream.h"
+#include "core/fxcrt/cfx_string_pool_template.h"
+#include "core/fxcrt/cfx_weak_ptr.h"
+
+class CPDF_StreamParser {
+ public:
+  enum SyntaxType { EndOfData, Number, Keyword, Name, Others };
+
+  CPDF_StreamParser(const uint8_t* pData, uint32_t dwSize);
+  CPDF_StreamParser(const uint8_t* pData,
+                    uint32_t dwSize,
+                    const CFX_WeakPtr<CFX_ByteStringPool>& pPool);
+  ~CPDF_StreamParser();
+
+  SyntaxType ParseNextElement();
+  const uint8_t* GetWordBuf() const { return m_WordBuffer; }
+  uint32_t GetWordSize() const { return m_WordSize; }
+  uint32_t GetPos() const { return m_Pos; }
+  void SetPos(uint32_t pos) { m_Pos = pos; }
+  std::unique_ptr<CPDF_Object> GetObject() { return std::move(m_pLastObj); }
+  std::unique_ptr<CPDF_Object> ReadNextObject(bool bAllowNestedArray,
+                                              uint32_t dwInArrayLevel);
+  std::unique_ptr<CPDF_Stream> ReadInlineStream(
+      CPDF_Document* pDoc,
+      std::unique_ptr<CPDF_Dictionary> pDict,
+      CPDF_Object* pCSObj);
+
+ private:
+  friend class cpdf_streamparser_ReadHexString_Test;
+
+  void GetNextWord(bool& bIsNumber);
+  CFX_ByteString ReadString();
+  CFX_ByteString ReadHexString();
+  bool PositionIsInBounds() const;
+
+  const uint8_t* m_pBuf;
+  uint32_t m_Size;  // Length in bytes of m_pBuf.
+  uint32_t m_Pos;   // Current byte position within m_pBuf.
+  uint8_t m_WordBuffer[256];
+  uint32_t m_WordSize;
+  std::unique_ptr<CPDF_Object> m_pLastObj;
+  CFX_WeakPtr<CFX_ByteStringPool> m_pPool;
+};
+
+#endif  // CORE_FPDFAPI_PAGE_CPDF_STREAMPARSER_H_