Cleanup FWL default values part II.

xfa/fwl/core/cfwl_message.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 XFA_FWL_CORE_CFWL_MESSAGE_H_
 #define XFA_FWL_CORE_CFWL_MESSAGE_H_
 
 #include <memory>
@@ skipping 12 matching lines @@
   explicit CFWL_Message(Type type);
   CFWL_Message(Type type, CFWL_Widget* pSrcTarget);
   CFWL_Message(Type type, CFWL_Widget* pSrcTarget, CFWL_Widget* pDstTarget);
   virtual ~CFWL_Message();
 
   virtual std::unique_ptr<CFWL_Message> Clone();
   Type GetType() const { return m_type; }
 
   CFWL_Widget* m_pSrcTarget;
   CFWL_Widget* m_pDstTarget;
-  uint32_t m_dwExtend;
 
  private:
   Type m_type;
 };
 
 
 #endif  // XFA_FWL_CORE_CFWL_MESSAGE_H_