Remove CJBig2_Object, CJBig2_Module, and friends.

core/src/fxcodec/jbig2/JBig2_SymbolDict.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 _JBIG2_SYMBOL_DICT_H_
 #define _JBIG2_SYMBOL_DICT_H_
+
+#include "JBig2_ArithDecoder.h"
 #include "JBig2_Define.h"
-#include "JBig2_ArithDecoder.h"
 #include "JBig2_Image.h"
-class CJBig2_SymbolDict : public CJBig2_Object {
+
+class CJBig2_SymbolDict {
  public:
   CJBig2_SymbolDict();
   CJBig2_SymbolDict* DeepCopy();
   ~CJBig2_SymbolDict();
 
  public:
   FX_DWORD SDNUMEXSYMS;
   CJBig2_Image** SDEXSYMS;
   FX_BOOL m_bContextRetained;
-  JBig2ArithCtx *m_gbContext, *m_grContext;
+  JBig2ArithCtx* m_gbContext;
+  JBig2ArithCtx* m_grContext;
 };
+
 #endif