Move core/fxcodec/codec/include and core/fxcodec/include files up

core/fxcodec/include/JBig2_DocumentContext.h

-// 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_FXCODEC_INCLUDE_JBIG2_DOCUMENTCONTEXT_H_
-#define CORE_FXCODEC_INCLUDE_JBIG2_DOCUMENTCONTEXT_H_
-
-#include <list>
-#include <memory>
-#include <utility>
-
-class CJBig2_SymbolDict;
-
-using CJBig2_CacheKey = std::pair<uint32_t, uint32_t>;
-using CJBig2_CachePair =
-    std::pair<CJBig2_CacheKey, std::unique_ptr<CJBig2_SymbolDict>>;
-
-// Holds per-document JBig2 related data.
-class JBig2_DocumentContext {
- public:
-  JBig2_DocumentContext();
-  ~JBig2_DocumentContext();
-
-  std::list<CJBig2_CachePair>* GetSymbolDictCache() {
-    return &m_SymbolDictCache;
-  }
-
- private:
-  std::list<CJBig2_CachePair> m_SymbolDictCache;
-};
-
-#endif  // CORE_FXCODEC_INCLUDE_JBIG2_DOCUMENTCONTEXT_H_