Remove FWL_EVENT_DEF macro

xfa/fwl/core/cfwl_event.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_EVENT_H_
 #define XFA_FWL_CORE_CFWL_EVENT_H_
 
 #include "core/fxcrt/fx_coordinates.h"
@@ skipping 46 matching lines @@
  public:
   CFWL_Event();
   virtual ~CFWL_Event();
 
   virtual CFWL_EventType GetClassID() const;
 
   IFWL_Widget* m_pSrcTarget;
   IFWL_Widget* m_pDstTarget;
 };
 
-#define FWL_EVENT_DEF(classname, eventType, ...)                            \
-  class classname : public CFWL_Event {                                     \
-   public:                                                                  \
-    classname();                                                            \
-    ~classname() override;                                                  \
-    CFWL_EventType GetClassID() const override;                             \
-    __VA_ARGS__                                                             \
-  };                                                                        \
-  inline classname::classname() {}                                          \
-  inline classname::~classname() {}                                         \
-  inline CFWL_EventType classname::GetClassID() const { return eventType; }
-
 #endif  // XFA_FWL_CORE_CFWL_EVENT_H_