Review and cleanup lint warnings.

core/src/fxcodec/codec/fx_codec_jbig.cpp

 // 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
 
+#include <list>
+
 #include "core/include/fxcodec/fx_codec.h"
 #include "core/src/fxcodec/codec/codec_int.h"
 
 // Holds per-document JBig2 related data.
 class JBig2DocumentContext : public CFX_DestructObject {
  public:
   std::list<CJBig2_CachePair>* GetSymbolDictCache() {
     return &m_SymbolDictCache;
   }
 
@@ skipping 99 matching lines @@
     return FXCODEC_STATUS_ERROR;
   }
   int dword_size =
       m_pJbig2Context->m_height * m_pJbig2Context->m_dest_pitch / 4;
   FX_DWORD* dword_buf = (FX_DWORD*)m_pJbig2Context->m_dest_buf;
   for (int i = 0; i < dword_size; i++) {
     dword_buf[i] = ~dword_buf[i];
   }
   return FXCODEC_STATUS_DECODE_FINISH;
 }